Home / 129,323.28-193,990.38-45,091.86

Finding the Fourth Proportional to 129,323.28, 193,990.38 and 45,091.86

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Solution

The fourth proportional to 129,323.28, 193,990.38 and 45,091.86 is: 67,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,323.28 : 193,990.38 = 45,091.86 : x
  2. Step 2: Convert to fraction form
    129,323.28/193,990.38 = 45,091.86/x
  3. Step 3: Cross multiply
    129,323.28x = 193,990.38 × 45,091.86
  4. Step 4: Simplify right side
    129,323.28x = 8,747,387,056.31
  5. Step 5: Solve for x
    x = 8,747,387,056.31/129,323.28
  6. Step 6: Final answer
    x = 67,639.69

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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.