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Finding the Fourth Proportional to 157,089.02, 216,781.82 and 85,469.33

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Solution

The fourth proportional to 157,089.02, 216,781.82 and 85,469.33 is: 117,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,089.02 : 216,781.82 = 85,469.33 : x
  2. Step 2: Convert to fraction form
    157,089.02/216,781.82 = 85,469.33/x
  3. Step 3: Cross multiply
    157,089.02x = 216,781.82 × 85,469.33
  4. Step 4: Simplify right side
    157,089.02x = 18,528,196,127.30
  5. Step 5: Solve for x
    x = 18,528,196,127.30/157,089.02
  6. Step 6: Final answer
    x = 117,947.11

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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.