Home / 83,728.40-125,592.60-83,145.20

Finding the Fourth Proportional to 83,728.40, 125,592.60 and 83,145.20

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Solution

The fourth proportional to 83,728.40, 125,592.60 and 83,145.20 is: 124,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,728.40 : 125,592.60 = 83,145.20 : x
  2. Step 2: Convert to fraction form
    83,728.40/125,592.60 = 83,145.20/x
  3. Step 3: Cross multiply
    83,728.40x = 125,592.60 × 83,145.20
  4. Step 4: Simplify right side
    83,728.40x = 10,442,421,845.52
  5. Step 5: Solve for x
    x = 10,442,421,845.52/83,728.40
  6. Step 6: Final answer
    x = 124,717.80

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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.