Home / 142,479.92-196,622.43-78,822.02

Finding the Fourth Proportional to 142,479.92, 196,622.43 and 78,822.02

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Solution

The fourth proportional to 142,479.92, 196,622.43 and 78,822.02 is: 108,774.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,479.92 : 196,622.43 = 78,822.02 : x
  2. Step 2: Convert to fraction form
    142,479.92/196,622.43 = 78,822.02/x
  3. Step 3: Cross multiply
    142,479.92x = 196,622.43 × 78,822.02
  4. Step 4: Simplify right side
    142,479.92x = 15,498,177,109.91
  5. Step 5: Solve for x
    x = 15,498,177,109.91/142,479.92
  6. Step 6: Final answer
    x = 108,774.47

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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.