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Finding the Fourth Proportional to 157,898.61, 217,875.15 and 89,877.47

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Solution

The fourth proportional to 157,898.61, 217,875.15 and 89,877.47 is: 124,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,898.61 : 217,875.15 = 89,877.47 : x
  2. Step 2: Convert to fraction form
    157,898.61/217,875.15 = 89,877.47/x
  3. Step 3: Cross multiply
    157,898.61x = 217,875.15 × 89,877.47
  4. Step 4: Simplify right side
    157,898.61x = 19,582,066,168.49
  5. Step 5: Solve for x
    x = 19,582,066,168.49/157,898.61
  6. Step 6: Final answer
    x = 124,016.71

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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.