Home / 142,575.71-196,760.68-78,913.49

Finding the Fourth Proportional to 142,575.71, 196,760.68 and 78,913.49

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Solution

The fourth proportional to 142,575.71, 196,760.68 and 78,913.49 is: 108,904.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,575.71 : 196,760.68 = 78,913.49 : x
  2. Step 2: Convert to fraction form
    142,575.71/196,760.68 = 78,913.49/x
  3. Step 3: Cross multiply
    142,575.71x = 196,760.68 × 78,913.49
  4. Step 4: Simplify right side
    142,575.71x = 15,527,070,772.49
  5. Step 5: Solve for x
    x = 15,527,070,772.49/142,575.71
  6. Step 6: Final answer
    x = 108,904.04

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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.