Home / 129,740.16-194,630.40-63,139.20

Finding the Fourth Proportional to 129,740.16, 194,630.40 and 63,139.20

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Solution

The fourth proportional to 129,740.16, 194,630.40 and 63,139.20 is: 94,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.16 : 194,630.40 = 63,139.20 : x
  2. Step 2: Convert to fraction form
    129,740.16/194,630.40 = 63,139.20/x
  3. Step 3: Cross multiply
    129,740.16x = 194,630.40 × 63,139.20
  4. Step 4: Simplify right side
    129,740.16x = 12,288,807,751.68
  5. Step 5: Solve for x
    x = 12,288,807,751.68/129,740.16
  6. Step 6: Final answer
    x = 94,718.61

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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.