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Finding the Fourth Proportional to 138,397.88, 206,838.53 and 101,036.62

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Solution

The fourth proportional to 138,397.88, 206,838.53 and 101,036.62 is: 151,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,397.88 : 206,838.53 = 101,036.62 : x
  2. Step 2: Convert to fraction form
    138,397.88/206,838.53 = 101,036.62/x
  3. Step 3: Cross multiply
    138,397.88x = 206,838.53 × 101,036.62
  4. Step 4: Simplify right side
    138,397.88x = 20,898,265,956.97
  5. Step 5: Solve for x
    x = 20,898,265,956.97/138,397.88
  6. Step 6: Final answer
    x = 151,001.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.