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Finding the Fourth Proportional to 157,272.68, 217,042.44 and 89,295.98

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Solution

The fourth proportional to 157,272.68, 217,042.44 and 89,295.98 is: 123,231.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,272.68 : 217,042.44 = 89,295.98 : x
  2. Step 2: Convert to fraction form
    157,272.68/217,042.44 = 89,295.98/x
  3. Step 3: Cross multiply
    157,272.68x = 217,042.44 × 89,295.98
  4. Step 4: Simplify right side
    157,272.68x = 19,381,017,487.40
  5. Step 5: Solve for x
    x = 19,381,017,487.40/157,272.68
  6. Step 6: Final answer
    x = 123,231.94

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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.