Home / 131,961.20-182,103-71,529.20

Finding the Fourth Proportional to 131,961.20, 182,103 and 71,529.20

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Solution

The fourth proportional to 131,961.20, 182,103 and 71,529.20 is: 98,708.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,961.20 : 182,103 = 71,529.20 : x
  2. Step 2: Convert to fraction form
    131,961.20/182,103 = 71,529.20/x
  3. Step 3: Cross multiply
    131,961.20x = 182,103 × 71,529.20
  4. Step 4: Simplify right side
    131,961.20x = 13,025,681,907.60
  5. Step 5: Solve for x
    x = 13,025,681,907.60/131,961.20
  6. Step 6: Final answer
    x = 98,708.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.