Home / 129,569.28-178,850.34-75,871.56

Finding the Fourth Proportional to 129,569.28, 178,850.34 and 75,871.56

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Solution

The fourth proportional to 129,569.28, 178,850.34 and 75,871.56 is: 104,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,569.28 : 178,850.34 = 75,871.56 : x
  2. Step 2: Convert to fraction form
    129,569.28/178,850.34 = 75,871.56/x
  3. Step 3: Cross multiply
    129,569.28x = 178,850.34 × 75,871.56
  4. Step 4: Simplify right side
    129,569.28x = 13,569,654,302.33
  5. Step 5: Solve for x
    x = 13,569,654,302.33/129,569.28
  6. Step 6: Final answer
    x = 104,728.95

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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.