Home / 142,206.91-196,246.73-78,545.77

Finding the Fourth Proportional to 142,206.91, 196,246.73 and 78,545.77

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Solution

The fourth proportional to 142,206.91, 196,246.73 and 78,545.77 is: 108,393.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,206.91 : 196,246.73 = 78,545.77 : x
  2. Step 2: Convert to fraction form
    142,206.91/196,246.73 = 78,545.77/x
  3. Step 3: Cross multiply
    142,206.91x = 196,246.73 × 78,545.77
  4. Step 4: Simplify right side
    142,206.91x = 15,414,350,223.58
  5. Step 5: Solve for x
    x = 15,414,350,223.58/142,206.91
  6. Step 6: Final answer
    x = 108,393.82

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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.