Home / 129,226.23-193,641.49-86,949.72

Finding the Fourth Proportional to 129,226.23, 193,641.49 and 86,949.72

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Solution

The fourth proportional to 129,226.23, 193,641.49 and 86,949.72 is: 130,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,226.23 : 193,641.49 = 86,949.72 : x
  2. Step 2: Convert to fraction form
    129,226.23/193,641.49 = 86,949.72/x
  3. Step 3: Cross multiply
    129,226.23x = 193,641.49 × 86,949.72
  4. Step 4: Simplify right side
    129,226.23x = 16,837,073,335.88
  5. Step 5: Solve for x
    x = 16,837,073,335.88/129,226.23
  6. Step 6: Final answer
    x = 130,291.45

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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.