Home / 85,217.20-127,825.80-72,095.20

Finding the Fourth Proportional to 85,217.20, 127,825.80 and 72,095.20

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Solution

The fourth proportional to 85,217.20, 127,825.80 and 72,095.20 is: 108,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,217.20 : 127,825.80 = 72,095.20 : x
  2. Step 2: Convert to fraction form
    85,217.20/127,825.80 = 72,095.20/x
  3. Step 3: Cross multiply
    85,217.20x = 127,825.80 × 72,095.20
  4. Step 4: Simplify right side
    85,217.20x = 9,215,626,616.16
  5. Step 5: Solve for x
    x = 9,215,626,616.16/85,217.20
  6. Step 6: Final answer
    x = 108,142.80

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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.