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Finding the Fourth Proportional to 127,144.56, 175,337.56 and 76,149.12

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Solution

The fourth proportional to 127,144.56, 175,337.56 and 76,149.12 is: 105,012.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,144.56 : 175,337.56 = 76,149.12 : x
  2. Step 2: Convert to fraction form
    127,144.56/175,337.56 = 76,149.12/x
  3. Step 3: Cross multiply
    127,144.56x = 175,337.56 × 76,149.12
  4. Step 4: Simplify right side
    127,144.56x = 13,351,800,896.95
  5. Step 5: Solve for x
    x = 13,351,800,896.95/127,144.56
  6. Step 6: Final answer
    x = 105,012.76

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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.