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Finding the Fourth Proportional to 156,859.79, 235,264.97 and 130,375.83

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Solution

The fourth proportional to 156,859.79, 235,264.97 and 130,375.83 is: 195,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,859.79 : 235,264.97 = 130,375.83 : x
  2. Step 2: Convert to fraction form
    156,859.79/235,264.97 = 130,375.83/x
  3. Step 3: Cross multiply
    156,859.79x = 235,264.97 × 130,375.83
  4. Step 4: Simplify right side
    156,859.79x = 30,672,865,081.80
  5. Step 5: Solve for x
    x = 30,672,865,081.80/156,859.79
  6. Step 6: Final answer
    x = 195,543.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.