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Finding the Fourth Proportional to 157,662.89, 217,575.39 and 86,044.50

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Solution

The fourth proportional to 157,662.89, 217,575.39 and 86,044.50 is: 118,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,662.89 : 217,575.39 = 86,044.50 : x
  2. Step 2: Convert to fraction form
    157,662.89/217,575.39 = 86,044.50/x
  3. Step 3: Cross multiply
    157,662.89x = 217,575.39 × 86,044.50
  4. Step 4: Simplify right side
    157,662.89x = 18,721,165,644.86
  5. Step 5: Solve for x
    x = 18,721,165,644.86/157,662.89
  6. Step 6: Final answer
    x = 118,741.74

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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.