Home / 91,044,139.40-136,566,209.10-80,521,607.60

Finding the Fourth Proportional to 91,044,139.40, 136,566,209.10 and 80,521,607.60

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Solution

The fourth proportional to 91,044,139.40, 136,566,209.10 and 80,521,607.60 is: 120,782,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,044,139.40 : 136,566,209.10 = 80,521,607.60 : x
  2. Step 2: Convert to fraction form
    91,044,139.40/136,566,209.10 = 80,521,607.60/x
  3. Step 3: Cross multiply
    91,044,139.40x = 136,566,209.10 × 80,521,607.60
  4. Step 4: Simplify right side
    91,044,139.40x = 10,996,530,700,569,748
  5. Step 5: Solve for x
    x = 10,996,530,700,569,748/91,044,139.40
  6. Step 6: Final answer
    x = 120,782,411.40

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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.