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Finding the Fourth Proportional to 126,065.55, 189,120.80 and 41,830.77

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Solution

The fourth proportional to 126,065.55, 189,120.80 and 41,830.77 is: 62,753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,065.55 : 189,120.80 = 41,830.77 : x
  2. Step 2: Convert to fraction form
    126,065.55/189,120.80 = 41,830.77/x
  3. Step 3: Cross multiply
    126,065.55x = 189,120.80 × 41,830.77
  4. Step 4: Simplify right side
    126,065.55x = 7,911,068,687.02
  5. Step 5: Solve for x
    x = 7,911,068,687.02/126,065.55
  6. Step 6: Final answer
    x = 62,753.61

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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.