Home / 129,725.60-179,014.49-72,370.91

Finding the Fourth Proportional to 129,725.60, 179,014.49 and 72,370.91

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Solution

The fourth proportional to 129,725.60, 179,014.49 and 72,370.91 is: 99,868.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,725.60 : 179,014.49 = 72,370.91 : x
  2. Step 2: Convert to fraction form
    129,725.60/179,014.49 = 72,370.91/x
  3. Step 3: Cross multiply
    129,725.60x = 179,014.49 × 72,370.91
  4. Step 4: Simplify right side
    129,725.60x = 12,955,441,901.56
  5. Step 5: Solve for x
    x = 12,955,441,901.56/129,725.60
  6. Step 6: Final answer
    x = 99,868.05

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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.