Home / 113,591.39-156,733.09-71,125.31

Finding the Fourth Proportional to 113,591.39, 156,733.09 and 71,125.31

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Solution

The fourth proportional to 113,591.39, 156,733.09 and 71,125.31 is: 98,138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,591.39 : 156,733.09 = 71,125.31 : x
  2. Step 2: Convert to fraction form
    113,591.39/156,733.09 = 71,125.31/x
  3. Step 3: Cross multiply
    113,591.39x = 156,733.09 × 71,125.31
  4. Step 4: Simplify right side
    113,591.39x = 11,147,689,827.53
  5. Step 5: Solve for x
    x = 11,147,689,827.53/113,591.39
  6. Step 6: Final answer
    x = 98,138.51

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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.