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Finding the Fourth Proportional to 138,019.52, 207,019.28 and 36,809.76

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Solution

The fourth proportional to 138,019.52, 207,019.28 and 36,809.76 is: 55,211.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,019.52 : 207,019.28 = 36,809.76 : x
  2. Step 2: Convert to fraction form
    138,019.52/207,019.28 = 36,809.76/x
  3. Step 3: Cross multiply
    138,019.52x = 207,019.28 × 36,809.76
  4. Step 4: Simplify right side
    138,019.52x = 7,620,330,012.17
  5. Step 5: Solve for x
    x = 7,620,330,012.17/138,019.52
  6. Step 6: Final answer
    x = 55,211.97

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1.5x scale

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.