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Finding the Fourth Proportional to 101,538.54, 140,126.58 and 67,487.76

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Solution

The fourth proportional to 101,538.54, 140,126.58 and 67,487.76 is: 93,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,538.54 : 140,126.58 = 67,487.76 : x
  2. Step 2: Convert to fraction form
    101,538.54/140,126.58 = 67,487.76/x
  3. Step 3: Cross multiply
    101,538.54x = 140,126.58 × 67,487.76
  4. Step 4: Simplify right side
    101,538.54x = 9,456,829,000.66
  5. Step 5: Solve for x
    x = 9,456,829,000.66/101,538.54
  6. Step 6: Final answer
    x = 93,135.37

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1.5x scale

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.