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Finding the Fourth Proportional to 128,114.16, 176,797.92 and 71,527.68

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Solution

The fourth proportional to 128,114.16, 176,797.92 and 71,527.68 is: 98,708.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,114.16 : 176,797.92 = 71,527.68 : x
  2. Step 2: Convert to fraction form
    128,114.16/176,797.92 = 71,527.68/x
  3. Step 3: Cross multiply
    128,114.16x = 176,797.92 × 71,527.68
  4. Step 4: Simplify right side
    128,114.16x = 12,645,945,046.43
  5. Step 5: Solve for x
    x = 12,645,945,046.43/128,114.16
  6. Step 6: Final answer
    x = 98,708.41

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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.