Home / 129,210.30-193,378.05-113,463.90

Finding the Fourth Proportional to 129,210.30, 193,378.05 and 113,463.90

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Solution

The fourth proportional to 129,210.30, 193,378.05 and 113,463.90 is: 169,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,210.30 : 193,378.05 = 113,463.90 : x
  2. Step 2: Convert to fraction form
    129,210.30/193,378.05 = 113,463.90/x
  3. Step 3: Cross multiply
    129,210.30x = 193,378.05 × 113,463.90
  4. Step 4: Simplify right side
    129,210.30x = 21,941,427,727.40
  5. Step 5: Solve for x
    x = 21,941,427,727.40/129,210.30
  6. Step 6: Final answer
    x = 169,811.75

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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.