Home / 156,724.20-235,215.90-72,613.80

Finding the Fourth Proportional to 156,724.20, 235,215.90 and 72,613.80

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Solution

The fourth proportional to 156,724.20, 235,215.90 and 72,613.80 is: 108,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,724.20 : 235,215.90 = 72,613.80 : x
  2. Step 2: Convert to fraction form
    156,724.20/235,215.90 = 72,613.80/x
  3. Step 3: Cross multiply
    156,724.20x = 235,215.90 × 72,613.80
  4. Step 4: Simplify right side
    156,724.20x = 17,079,920,319.42
  5. Step 5: Solve for x
    x = 17,079,920,319.42/156,724.20
  6. Step 6: Final answer
    x = 108,980.75

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1.5x scale

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.