Home / 142,582.92-196,743.83-78,920.57

Finding the Fourth Proportional to 142,582.92, 196,743.83 and 78,920.57

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Solution

The fourth proportional to 142,582.92, 196,743.83 and 78,920.57 is: 108,898.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,582.92 : 196,743.83 = 78,920.57 : x
  2. Step 2: Convert to fraction form
    142,582.92/196,743.83 = 78,920.57/x
  3. Step 3: Cross multiply
    142,582.92x = 196,743.83 × 78,920.57
  4. Step 4: Simplify right side
    142,582.92x = 15,527,133,829.26
  5. Step 5: Solve for x
    x = 15,527,133,829.26/142,582.92
  6. Step 6: Final answer
    x = 108,898.97

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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.