Home / 142,337.18-196,425.28-77,806.68

Finding the Fourth Proportional to 142,337.18, 196,425.28 and 77,806.68

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Solution

The fourth proportional to 142,337.18, 196,425.28 and 77,806.68 is: 107,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,337.18 : 196,425.28 = 77,806.68 : x
  2. Step 2: Convert to fraction form
    142,337.18/196,425.28 = 77,806.68/x
  3. Step 3: Cross multiply
    142,337.18x = 196,425.28 × 77,806.68
  4. Step 4: Simplify right side
    142,337.18x = 15,283,198,904.87
  5. Step 5: Solve for x
    x = 15,283,198,904.87/142,337.18
  6. Step 6: Final answer
    x = 107,373.20

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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.