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Finding the Fourth Proportional to 131,576.55, 181,576.67 and 72,641.87

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Solution

The fourth proportional to 131,576.55, 181,576.67 and 72,641.87 is: 100,246.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,576.55 : 181,576.67 = 72,641.87 : x
  2. Step 2: Convert to fraction form
    131,576.55/181,576.67 = 72,641.87/x
  3. Step 3: Cross multiply
    131,576.55x = 181,576.67 × 72,641.87
  4. Step 4: Simplify right side
    131,576.55x = 13,190,067,586.08
  5. Step 5: Solve for x
    x = 13,190,067,586.08/131,576.55
  6. Step 6: Final answer
    x = 100,246.34

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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.