Home / 72,126.20-108,221.70-25,412.60

Finding the Fourth Proportional to 72,126.20, 108,221.70 and 25,412.60

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Solution

The fourth proportional to 72,126.20, 108,221.70 and 25,412.60 is: 38,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,126.20 : 108,221.70 = 25,412.60 : x
  2. Step 2: Convert to fraction form
    72,126.20/108,221.70 = 25,412.60/x
  3. Step 3: Cross multiply
    72,126.20x = 108,221.70 × 25,412.60
  4. Step 4: Simplify right side
    72,126.20x = 2,750,194,773.42
  5. Step 5: Solve for x
    x = 2,750,194,773.42/72,126.20
  6. Step 6: Final answer
    x = 38,130.32

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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.