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Finding the Fourth Proportional to 124,832.16, 187,144.56 and 87,284.88

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Solution

The fourth proportional to 124,832.16, 187,144.56 and 87,284.88 is: 130,854.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,832.16 : 187,144.56 = 87,284.88 : x
  2. Step 2: Convert to fraction form
    124,832.16/187,144.56 = 87,284.88/x
  3. Step 3: Cross multiply
    124,832.16x = 187,144.56 × 87,284.88
  4. Step 4: Simplify right side
    124,832.16x = 16,334,890,462.25
  5. Step 5: Solve for x
    x = 16,334,890,462.25/124,832.16
  6. Step 6: Final answer
    x = 130,854.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.