Home / 142,352.72-196,446.60-78,689.36

Finding the Fourth Proportional to 142,352.72, 196,446.60 and 78,689.36

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Solution

The fourth proportional to 142,352.72, 196,446.60 and 78,689.36 is: 108,591.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,352.72 : 196,446.60 = 78,689.36 : x
  2. Step 2: Convert to fraction form
    142,352.72/196,446.60 = 78,689.36/x
  3. Step 3: Cross multiply
    142,352.72x = 196,446.60 × 78,689.36
  4. Step 4: Simplify right side
    142,352.72x = 15,458,257,228.18
  5. Step 5: Solve for x
    x = 15,458,257,228.18/142,352.72
  6. Step 6: Final answer
    x = 108,591.23

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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.