Home / 345,402.89-518,151.48-120,711.18

Finding the Fourth Proportional to 345,402.89, 518,151.48 and 120,711.18

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Solution

The fourth proportional to 345,402.89, 518,151.48 and 120,711.18 is: 181,083.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,402.89 : 518,151.48 = 120,711.18 : x
  2. Step 2: Convert to fraction form
    345,402.89/518,151.48 = 120,711.18/x
  3. Step 3: Cross multiply
    345,402.89x = 518,151.48 × 120,711.18
  4. Step 4: Simplify right side
    345,402.89x = 62,546,676,569.55
  5. Step 5: Solve for x
    x = 62,546,676,569.55/345,402.89
  6. Step 6: Final answer
    x = 181,083.25

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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.