Home / 109,666.71-151,344.65-61,920.05

Finding the Fourth Proportional to 109,666.71, 151,344.65 and 61,920.05

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Solution

The fourth proportional to 109,666.71, 151,344.65 and 61,920.05 is: 85,452.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,666.71 : 151,344.65 = 61,920.05 : x
  2. Step 2: Convert to fraction form
    109,666.71/151,344.65 = 61,920.05/x
  3. Step 3: Cross multiply
    109,666.71x = 151,344.65 × 61,920.05
  4. Step 4: Simplify right side
    109,666.71x = 9,371,267,693.31
  5. Step 5: Solve for x
    x = 9,371,267,693.31/109,666.71
  6. Step 6: Final answer
    x = 85,452.26

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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.