Home / 209,332.26-288,732.15-137,689.38

Finding the Fourth Proportional to 209,332.26, 288,732.15 and 137,689.38

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Solution

The fourth proportional to 209,332.26, 288,732.15 and 137,689.38 is: 189,915.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,332.26 : 288,732.15 = 137,689.38 : x
  2. Step 2: Convert to fraction form
    209,332.26/288,732.15 = 137,689.38/x
  3. Step 3: Cross multiply
    209,332.26x = 288,732.15 × 137,689.38
  4. Step 4: Simplify right side
    209,332.26x = 39,755,350,719.57
  5. Step 5: Solve for x
    x = 39,755,350,719.57/209,332.26
  6. Step 6: Final answer
    x = 189,915.07

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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.