Home / 142,056.72-196,033.13-78,393.15

Finding the Fourth Proportional to 142,056.72, 196,033.13 and 78,393.15

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Solution

The fourth proportional to 142,056.72, 196,033.13 and 78,393.15 is: 108,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,056.72 : 196,033.13 = 78,393.15 : x
  2. Step 2: Convert to fraction form
    142,056.72/196,033.13 = 78,393.15/x
  3. Step 3: Cross multiply
    142,056.72x = 196,033.13 × 78,393.15
  4. Step 4: Simplify right side
    142,056.72x = 15,367,654,565.06
  5. Step 5: Solve for x
    x = 15,367,654,565.06/142,056.72
  6. Step 6: Final answer
    x = 108,179.71

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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.