Home / 132,445.10-182,769.20-72,015.78

Finding the Fourth Proportional to 132,445.10, 182,769.20 and 72,015.78

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Solution

The fourth proportional to 132,445.10, 182,769.20 and 72,015.78 is: 99,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,445.10 : 182,769.20 = 72,015.78 : x
  2. Step 2: Convert to fraction form
    132,445.10/182,769.20 = 72,015.78/x
  3. Step 3: Cross multiply
    132,445.10x = 182,769.20 × 72,015.78
  4. Step 4: Simplify right side
    132,445.10x = 13,162,266,497.98
  5. Step 5: Solve for x
    x = 13,162,266,497.98/132,445.10
  6. Step 6: Final answer
    x = 99,379.04

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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.