Home / 129,677.52-178,951.77-72,327.09

Finding the Fourth Proportional to 129,677.52, 178,951.77 and 72,327.09

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Solution

The fourth proportional to 129,677.52, 178,951.77 and 72,327.09 is: 99,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,677.52 : 178,951.77 = 72,327.09 : x
  2. Step 2: Convert to fraction form
    129,677.52/178,951.77 = 72,327.09/x
  3. Step 3: Cross multiply
    129,677.52x = 178,951.77 × 72,327.09
  4. Step 4: Simplify right side
    129,677.52x = 12,943,060,774.45
  5. Step 5: Solve for x
    x = 12,943,060,774.45/129,677.52
  6. Step 6: Final answer
    x = 99,809.60

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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.