Home / 132,348.90-198,506.94-78,345.72

Finding the Fourth Proportional to 132,348.90, 198,506.94 and 78,345.72

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Solution

The fourth proportional to 132,348.90, 198,506.94 and 78,345.72 is: 117,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,348.90 : 198,506.94 = 78,345.72 : x
  2. Step 2: Convert to fraction form
    132,348.90/198,506.94 = 78,345.72/x
  3. Step 3: Cross multiply
    132,348.90x = 198,506.94 × 78,345.72
  4. Step 4: Simplify right side
    132,348.90x = 15,552,169,139.30
  5. Step 5: Solve for x
    x = 15,552,169,139.30/132,348.90
  6. Step 6: Final answer
    x = 117,508.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.