Home / 83,558.40-125,337.60-77,143.20

Finding the Fourth Proportional to 83,558.40, 125,337.60 and 77,143.20

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Solution

The fourth proportional to 83,558.40, 125,337.60 and 77,143.20 is: 115,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,558.40 : 125,337.60 = 77,143.20 : x
  2. Step 2: Convert to fraction form
    83,558.40/125,337.60 = 77,143.20/x
  3. Step 3: Cross multiply
    83,558.40x = 125,337.60 × 77,143.20
  4. Step 4: Simplify right side
    83,558.40x = 9,668,943,544.32
  5. Step 5: Solve for x
    x = 9,668,943,544.32/83,558.40
  6. Step 6: Final answer
    x = 115,714.80

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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.