Home / 142,544.46-196,708.59-78,881.10

Finding the Fourth Proportional to 142,544.46, 196,708.59 and 78,881.10

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Solution

The fourth proportional to 142,544.46, 196,708.59 and 78,881.10 is: 108,854.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,544.46 : 196,708.59 = 78,881.10 : x
  2. Step 2: Convert to fraction form
    142,544.46/196,708.59 = 78,881.10/x
  3. Step 3: Cross multiply
    142,544.46x = 196,708.59 × 78,881.10
  4. Step 4: Simplify right side
    142,544.46x = 15,516,589,958.65
  5. Step 5: Solve for x
    x = 15,516,589,958.65/142,544.46
  6. Step 6: Final answer
    x = 108,854.39

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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.