Home / 126,345.48-189,382.05-67,121.52

Finding the Fourth Proportional to 126,345.48, 189,382.05 and 67,121.52

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Solution

The fourth proportional to 126,345.48, 189,382.05 and 67,121.52 is: 100,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,345.48 : 189,382.05 = 67,121.52 : x
  2. Step 2: Convert to fraction form
    126,345.48/189,382.05 = 67,121.52/x
  3. Step 3: Cross multiply
    126,345.48x = 189,382.05 × 67,121.52
  4. Step 4: Simplify right side
    126,345.48x = 12,711,611,056.72
  5. Step 5: Solve for x
    x = 12,711,611,056.72/126,345.48
  6. Step 6: Final answer
    x = 100,609.94

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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.