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Finding the Fourth Proportional to 129,959.52, 179,289.90 and 87,444.24

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Solution

The fourth proportional to 129,959.52, 179,289.90 and 87,444.24 is: 120,636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,959.52 : 179,289.90 = 87,444.24 : x
  2. Step 2: Convert to fraction form
    129,959.52/179,289.90 = 87,444.24/x
  3. Step 3: Cross multiply
    129,959.52x = 179,289.90 × 87,444.24
  4. Step 4: Simplify right side
    129,959.52x = 15,677,869,045.18
  5. Step 5: Solve for x
    x = 15,677,869,045.18/129,959.52
  6. Step 6: Final answer
    x = 120,636.56

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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.