Home / 83,723.70-125,585.55-77,818.80

Finding the Fourth Proportional to 83,723.70, 125,585.55 and 77,818.80

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Solution

The fourth proportional to 83,723.70, 125,585.55 and 77,818.80 is: 116,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,723.70 : 125,585.55 = 77,818.80 : x
  2. Step 2: Convert to fraction form
    83,723.70/125,585.55 = 77,818.80/x
  3. Step 3: Cross multiply
    83,723.70x = 125,585.55 × 77,818.80
  4. Step 4: Simplify right side
    83,723.70x = 9,772,916,798.34
  5. Step 5: Solve for x
    x = 9,772,916,798.34/83,723.70
  6. Step 6: Final answer
    x = 116,728.20

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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.