Home / 128,931.92-193,473.17-54,046.31

Finding the Fourth Proportional to 128,931.92, 193,473.17 and 54,046.31

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Solution

The fourth proportional to 128,931.92, 193,473.17 and 54,046.31 is: 81,101.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,931.92 : 193,473.17 = 54,046.31 : x
  2. Step 2: Convert to fraction form
    128,931.92/193,473.17 = 54,046.31/x
  3. Step 3: Cross multiply
    128,931.92x = 193,473.17 × 54,046.31
  4. Step 4: Simplify right side
    128,931.92x = 10,456,510,090.25
  5. Step 5: Solve for x
    x = 10,456,510,090.25/128,931.92
  6. Step 6: Final answer
    x = 81,101.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.