Home / 128,960.31-193,378.27-54,060.36

Finding the Fourth Proportional to 128,960.31, 193,378.27 and 54,060.36

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Solution

The fourth proportional to 128,960.31, 193,378.27 and 54,060.36 is: 81,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960.31 : 193,378.27 = 54,060.36 : x
  2. Step 2: Convert to fraction form
    128,960.31/193,378.27 = 54,060.36/x
  3. Step 3: Cross multiply
    128,960.31x = 193,378.27 × 54,060.36
  4. Step 4: Simplify right side
    128,960.31x = 10,454,098,892.38
  5. Step 5: Solve for x
    x = 10,454,098,892.38/128,960.31
  6. Step 6: Final answer
    x = 81,064.47

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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.