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Finding the Fourth Proportional to 127,431.52, 175,834.80 and 70,841.44

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Solution

The fourth proportional to 127,431.52, 175,834.80 and 70,841.44 is: 97,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,431.52 : 175,834.80 = 70,841.44 : x
  2. Step 2: Convert to fraction form
    127,431.52/175,834.80 = 70,841.44/x
  3. Step 3: Cross multiply
    127,431.52x = 175,834.80 × 70,841.44
  4. Step 4: Simplify right side
    127,431.52x = 12,456,390,434.11
  5. Step 5: Solve for x
    x = 12,456,390,434.11/127,431.52
  6. Step 6: Final answer
    x = 97,749.68

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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.