Home / 129,112.65-193,669.11-40,366.62

Finding the Fourth Proportional to 129,112.65, 193,669.11 and 40,366.62

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Solution

The fourth proportional to 129,112.65, 193,669.11 and 40,366.62 is: 60,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,112.65 : 193,669.11 = 40,366.62 : x
  2. Step 2: Convert to fraction form
    129,112.65/193,669.11 = 40,366.62/x
  3. Step 3: Cross multiply
    129,112.65x = 193,669.11 × 40,366.62
  4. Step 4: Simplify right side
    129,112.65x = 7,817,767,369.11
  5. Step 5: Solve for x
    x = 7,817,767,369.11/129,112.65
  6. Step 6: Final answer
    x = 60,549.97

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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.