Home / 91,044,078.90-136,566,118.35-80,521,547.10

Finding the Fourth Proportional to 91,044,078.90, 136,566,118.35 and 80,521,547.10

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Solution

The fourth proportional to 91,044,078.90, 136,566,118.35 and 80,521,547.10 is: 120,782,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,044,078.90 : 136,566,118.35 = 80,521,547.10 : x
  2. Step 2: Convert to fraction form
    91,044,078.90/136,566,118.35 = 80,521,547.10/x
  3. Step 3: Cross multiply
    91,044,078.90x = 136,566,118.35 × 80,521,547.10
  4. Step 4: Simplify right side
    91,044,078.90x = 10,996,515,130,983,698
  5. Step 5: Solve for x
    x = 10,996,515,130,983,698/91,044,078.90
  6. Step 6: Final answer
    x = 120,782,320.65

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.