Home / 85,214.20-127,821.30-72,092.20

Finding the Fourth Proportional to 85,214.20, 127,821.30 and 72,092.20

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Solution

The fourth proportional to 85,214.20, 127,821.30 and 72,092.20 is: 108,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,214.20 : 127,821.30 = 72,092.20 : x
  2. Step 2: Convert to fraction form
    85,214.20/127,821.30 = 72,092.20/x
  3. Step 3: Cross multiply
    85,214.20x = 127,821.30 × 72,092.20
  4. Step 4: Simplify right side
    85,214.20x = 9,214,918,723.86
  5. Step 5: Solve for x
    x = 9,214,918,723.86/85,214.20
  6. Step 6: Final answer
    x = 108,138.30

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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.