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Finding the Fourth Proportional to 129,980.92, 179,417.28 and 92,189.56

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Solution

The fourth proportional to 129,980.92, 179,417.28 and 92,189.56 is: 127,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,980.92 : 179,417.28 = 92,189.56 : x
  2. Step 2: Convert to fraction form
    129,980.92/179,417.28 = 92,189.56/x
  3. Step 3: Cross multiply
    129,980.92x = 179,417.28 × 92,189.56
  4. Step 4: Simplify right side
    129,980.92x = 16,540,400,099.60
  5. Step 5: Solve for x
    x = 16,540,400,099.60/129,980.92
  6. Step 6: Final answer
    x = 127,252.52

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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.