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Finding the Fourth Proportional to 157,870.08, 217,862.64 and 86,250.96

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Solution

The fourth proportional to 157,870.08, 217,862.64 and 86,250.96 is: 119,027.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,870.08 : 217,862.64 = 86,250.96 : x
  2. Step 2: Convert to fraction form
    157,870.08/217,862.64 = 86,250.96/x
  3. Step 3: Cross multiply
    157,870.08x = 217,862.64 × 86,250.96
  4. Step 4: Simplify right side
    157,870.08x = 18,790,861,848.13
  5. Step 5: Solve for x
    x = 18,790,861,848.13/157,870.08
  6. Step 6: Final answer
    x = 119,027.38

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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.