Home / 99,602.15-137,445.66-57,157.88

Finding the Fourth Proportional to 99,602.15, 137,445.66 and 57,157.88

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Solution

The fourth proportional to 99,602.15, 137,445.66 and 57,157.88 is: 78,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,602.15 : 137,445.66 = 57,157.88 : x
  2. Step 2: Convert to fraction form
    99,602.15/137,445.66 = 57,157.88/x
  3. Step 3: Cross multiply
    99,602.15x = 137,445.66 × 57,157.88
  4. Step 4: Simplify right side
    99,602.15x = 7,856,101,853.57
  5. Step 5: Solve for x
    x = 7,856,101,853.57/99,602.15
  6. Step 6: Final answer
    x = 78,874.83

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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.