Home / 138,434.30-207,651.45-137,122.10

Finding the Fourth Proportional to 138,434.30, 207,651.45 and 137,122.10

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Solution

The fourth proportional to 138,434.30, 207,651.45 and 137,122.10 is: 205,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,434.30 : 207,651.45 = 137,122.10 : x
  2. Step 2: Convert to fraction form
    138,434.30/207,651.45 = 137,122.10/x
  3. Step 3: Cross multiply
    138,434.30x = 207,651.45 × 137,122.10
  4. Step 4: Simplify right side
    138,434.30x = 28,473,602,892.05
  5. Step 5: Solve for x
    x = 28,473,602,892.05/138,434.30
  6. Step 6: Final answer
    x = 205,683.15

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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.