Home / 156,957.80-235,231.90-72,708.20

Finding the Fourth Proportional to 156,957.80, 235,231.90 and 72,708.20

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Solution

The fourth proportional to 156,957.80, 235,231.90 and 72,708.20 is: 108,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,957.80 : 235,231.90 = 72,708.20 : x
  2. Step 2: Convert to fraction form
    156,957.80/235,231.90 = 72,708.20/x
  3. Step 3: Cross multiply
    156,957.80x = 235,231.90 × 72,708.20
  4. Step 4: Simplify right side
    156,957.80x = 17,103,288,031.58
  5. Step 5: Solve for x
    x = 17,103,288,031.58/156,957.80
  6. Step 6: Final answer
    x = 108,967.43

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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.