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Finding the Fourth Proportional to 131,124.88, 180,946.92 and 71,508.88

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Solution

The fourth proportional to 131,124.88, 180,946.92 and 71,508.88 is: 98,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,124.88 : 180,946.92 = 71,508.88 : x
  2. Step 2: Convert to fraction form
    131,124.88/180,946.92 = 71,508.88/x
  3. Step 3: Cross multiply
    131,124.88x = 180,946.92 × 71,508.88
  4. Step 4: Simplify right side
    131,124.88x = 12,939,311,588.65
  5. Step 5: Solve for x
    x = 12,939,311,588.65/131,124.88
  6. Step 6: Final answer
    x = 98,679.30

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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.