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Finding the Fourth Proportional to 157,370.69, 217,164.76 and 89,387.45

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Solution

The fourth proportional to 157,370.69, 217,164.76 and 89,387.45 is: 123,350.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,370.69 : 217,164.76 = 89,387.45 : x
  2. Step 2: Convert to fraction form
    157,370.69/217,164.76 = 89,387.45/x
  3. Step 3: Cross multiply
    157,370.69x = 217,164.76 × 89,387.45
  4. Step 4: Simplify right side
    157,370.69x = 19,411,804,892.64
  5. Step 5: Solve for x
    x = 19,411,804,892.64/157,370.69
  6. Step 6: Final answer
    x = 123,350.83

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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.