Home / 129,512.44-178,729.50-72,925.84

Finding the Fourth Proportional to 129,512.44, 178,729.50 and 72,925.84

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Solution

The fourth proportional to 129,512.44, 178,729.50 and 72,925.84 is: 100,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,512.44 : 178,729.50 = 72,925.84 : x
  2. Step 2: Convert to fraction form
    129,512.44/178,729.50 = 72,925.84/x
  3. Step 3: Cross multiply
    129,512.44x = 178,729.50 × 72,925.84
  4. Step 4: Simplify right side
    129,512.44x = 13,033,998,920.28
  5. Step 5: Solve for x
    x = 13,033,998,920.28/129,512.44
  6. Step 6: Final answer
    x = 100,638.97

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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.