Home / 142,592.28-196,774.97-78,928.71

Finding the Fourth Proportional to 142,592.28, 196,774.97 and 78,928.71

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Solution

The fourth proportional to 142,592.28, 196,774.97 and 78,928.71 is: 108,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,592.28 : 196,774.97 = 78,928.71 : x
  2. Step 2: Convert to fraction form
    142,592.28/196,774.97 = 78,928.71/x
  3. Step 3: Cross multiply
    142,592.28x = 196,774.97 × 78,928.71
  4. Step 4: Simplify right side
    142,592.28x = 15,531,194,147.75
  5. Step 5: Solve for x
    x = 15,531,194,147.75/142,592.28
  6. Step 6: Final answer
    x = 108,920.30

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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.