Home / 129,871.10-194,806.65-115,436.90

Finding the Fourth Proportional to 129,871.10, 194,806.65 and 115,436.90

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Solution

The fourth proportional to 129,871.10, 194,806.65 and 115,436.90 is: 173,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,871.10 : 194,806.65 = 115,436.90 : x
  2. Step 2: Convert to fraction form
    129,871.10/194,806.65 = 115,436.90/x
  3. Step 3: Cross multiply
    129,871.10x = 194,806.65 × 115,436.90
  4. Step 4: Simplify right side
    129,871.10x = 22,487,875,775.39
  5. Step 5: Solve for x
    x = 22,487,875,775.39/129,871.10
  6. Step 6: Final answer
    x = 173,155.35

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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.