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Finding the Fourth Proportional to 127,105.60, 175,332.84 and 79,275.92

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Solution

The fourth proportional to 127,105.60, 175,332.84 and 79,275.92 is: 109,355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,105.60 : 175,332.84 = 79,275.92 : x
  2. Step 2: Convert to fraction form
    127,105.60/175,332.84 = 79,275.92/x
  3. Step 3: Cross multiply
    127,105.60x = 175,332.84 × 79,275.92
  4. Step 4: Simplify right side
    127,105.60x = 13,899,672,197.21
  5. Step 5: Solve for x
    x = 13,899,672,197.21/127,105.60
  6. Step 6: Final answer
    x = 109,355.31

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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.