Home / 120,231,119.15-165,919,266.02-65,226,975.65

Finding the Fourth Proportional to 120,231,119.15, 165,919,266.02 and 65,226,975.65

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Solution

The fourth proportional to 120,231,119.15, 165,919,266.02 and 65,226,975.65 is: 90,013,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,231,119.15 : 165,919,266.02 = 65,226,975.65 : x
  2. Step 2: Convert to fraction form
    120,231,119.15/165,919,266.02 = 65,226,975.65/x
  3. Step 3: Cross multiply
    120,231,119.15x = 165,919,266.02 × 65,226,975.65
  4. Step 4: Simplify right side
    120,231,119.15x = 10,822,411,924,552,412
  5. Step 5: Solve for x
    x = 10,822,411,924,552,412/120,231,119.15
  6. Step 6: Final answer
    x = 90,013,400.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.