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Finding the Fourth Proportional to 159,437.72, 220,024.04 and 87,817.74

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Solution

The fourth proportional to 159,437.72, 220,024.04 and 87,817.74 is: 121,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,437.72 : 220,024.04 = 87,817.74 : x
  2. Step 2: Convert to fraction form
    159,437.72/220,024.04 = 87,817.74/x
  3. Step 3: Cross multiply
    159,437.72x = 220,024.04 × 87,817.74
  4. Step 4: Simplify right side
    159,437.72x = 19,322,013,499.38
  5. Step 5: Solve for x
    x = 19,322,013,499.38/159,437.72
  6. Step 6: Final answer
    x = 121,188.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.