Home / 142,292.59-196,363.84-78,630.39

Finding the Fourth Proportional to 142,292.59, 196,363.84 and 78,630.39

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Solution

The fourth proportional to 142,292.59, 196,363.84 and 78,630.39 is: 108,509.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,292.59 : 196,363.84 = 78,630.39 : x
  2. Step 2: Convert to fraction form
    142,292.59/196,363.84 = 78,630.39/x
  3. Step 3: Cross multiply
    142,292.59x = 196,363.84 × 78,630.39
  4. Step 4: Simplify right side
    142,292.59x = 15,440,165,321.10
  5. Step 5: Solve for x
    x = 15,440,165,321.10/142,292.59
  6. Step 6: Final answer
    x = 108,509.97

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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.