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Finding the Fourth Proportional to 159,618.76, 239,428.14 and 54,438.64

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Solution

The fourth proportional to 159,618.76, 239,428.14 and 54,438.64 is: 81,657.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,618.76 : 239,428.14 = 54,438.64 : x
  2. Step 2: Convert to fraction form
    159,618.76/239,428.14 = 54,438.64/x
  3. Step 3: Cross multiply
    159,618.76x = 239,428.14 × 54,438.64
  4. Step 4: Simplify right side
    159,618.76x = 13,034,142,319.33
  5. Step 5: Solve for x
    x = 13,034,142,319.33/159,618.76
  6. Step 6: Final answer
    x = 81,657.96

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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.