Home / 142,585.92-196,747.97-78,923.57

Finding the Fourth Proportional to 142,585.92, 196,747.97 and 78,923.57

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Solution

The fourth proportional to 142,585.92, 196,747.97 and 78,923.57 is: 108,903.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,585.92 : 196,747.97 = 78,923.57 : x
  2. Step 2: Convert to fraction form
    142,585.92/196,747.97 = 78,923.57/x
  3. Step 3: Cross multiply
    142,585.92x = 196,747.97 × 78,923.57
  4. Step 4: Simplify right side
    142,585.92x = 15,528,050,804.30
  5. Step 5: Solve for x
    x = 15,528,050,804.30/142,585.92
  6. Step 6: Final answer
    x = 108,903.11

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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.