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Finding the Fourth Proportional to 112,487.63, 155,236.17 and 62,189.87

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Solution

The fourth proportional to 112,487.63, 155,236.17 and 62,189.87 is: 85,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,487.63 : 155,236.17 = 62,189.87 : x
  2. Step 2: Convert to fraction form
    112,487.63/155,236.17 = 62,189.87/x
  3. Step 3: Cross multiply
    112,487.63x = 155,236.17 × 62,189.87
  4. Step 4: Simplify right side
    112,487.63x = 9,654,116,144.47
  5. Step 5: Solve for x
    x = 9,654,116,144.47/112,487.63
  6. Step 6: Final answer
    x = 85,823.81

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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.