Home / 83,647.20-125,470.80-80,018.40

Finding the Fourth Proportional to 83,647.20, 125,470.80 and 80,018.40

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Solution

The fourth proportional to 83,647.20, 125,470.80 and 80,018.40 is: 120,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,647.20 : 125,470.80 = 80,018.40 : x
  2. Step 2: Convert to fraction form
    83,647.20/125,470.80 = 80,018.40/x
  3. Step 3: Cross multiply
    83,647.20x = 125,470.80 × 80,018.40
  4. Step 4: Simplify right side
    83,647.20x = 10,039,972,662.72
  5. Step 5: Solve for x
    x = 10,039,972,662.72/83,647.20
  6. Step 6: Final answer
    x = 120,027.60

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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.