Home / 129,938.52-179,260.86-87,423.24

Finding the Fourth Proportional to 129,938.52, 179,260.86 and 87,423.24

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Solution

The fourth proportional to 129,938.52, 179,260.86 and 87,423.24 is: 120,607.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.52 : 179,260.86 = 87,423.24 : x
  2. Step 2: Convert to fraction form
    129,938.52/179,260.86 = 87,423.24/x
  3. Step 3: Cross multiply
    129,938.52x = 179,260.86 × 87,423.24
  4. Step 4: Simplify right side
    129,938.52x = 15,671,565,186.39
  5. Step 5: Solve for x
    x = 15,671,565,186.39/129,938.52
  6. Step 6: Final answer
    x = 120,607.54

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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.