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Finding the Fourth Proportional to 159,438.76, 239,158.14 and 138,910.12

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Solution

The fourth proportional to 159,438.76, 239,158.14 and 138,910.12 is: 208,365.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,438.76 : 239,158.14 = 138,910.12 : x
  2. Step 2: Convert to fraction form
    159,438.76/239,158.14 = 138,910.12/x
  3. Step 3: Cross multiply
    159,438.76x = 239,158.14 × 138,910.12
  4. Step 4: Simplify right side
    159,438.76x = 33,221,485,926.38
  5. Step 5: Solve for x
    x = 33,221,485,926.38/159,438.76
  6. Step 6: Final answer
    x = 208,365.18

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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.