Home / 142,535.52-196,703.10-78,879.24

Finding the Fourth Proportional to 142,535.52, 196,703.10 and 78,879.24

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Solution

The fourth proportional to 142,535.52, 196,703.10 and 78,879.24 is: 108,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,535.52 : 196,703.10 = 78,879.24 : x
  2. Step 2: Convert to fraction form
    142,535.52/196,703.10 = 78,879.24/x
  3. Step 3: Cross multiply
    142,535.52x = 196,703.10 × 78,879.24
  4. Step 4: Simplify right side
    142,535.52x = 15,515,791,033.64
  5. Step 5: Solve for x
    x = 15,515,791,033.64/142,535.52
  6. Step 6: Final answer
    x = 108,855.61

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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.