Home / 129,554.25-178,829.61-75,856.53

Finding the Fourth Proportional to 129,554.25, 178,829.61 and 75,856.53

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Solution

The fourth proportional to 129,554.25, 178,829.61 and 75,856.53 is: 104,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,554.25 : 178,829.61 = 75,856.53 : x
  2. Step 2: Convert to fraction form
    129,554.25/178,829.61 = 75,856.53/x
  3. Step 3: Cross multiply
    129,554.25x = 178,829.61 × 75,856.53
  4. Step 4: Simplify right side
    129,554.25x = 13,565,393,675.85
  5. Step 5: Solve for x
    x = 13,565,393,675.85/129,554.25
  6. Step 6: Final answer
    x = 104,708.21

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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.