Home / 129,129.06-193,697.05-40,382.57

Finding the Fourth Proportional to 129,129.06, 193,697.05 and 40,382.57

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Solution

The fourth proportional to 129,129.06, 193,697.05 and 40,382.57 is: 60,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,129.06 : 193,697.05 = 40,382.57 : x
  2. Step 2: Convert to fraction form
    129,129.06/193,697.05 = 40,382.57/x
  3. Step 3: Cross multiply
    129,129.06x = 193,697.05 × 40,382.57
  4. Step 4: Simplify right side
    129,129.06x = 7,821,983,610.98
  5. Step 5: Solve for x
    x = 7,821,983,610.98/129,129.06
  6. Step 6: Final answer
    x = 60,574.93

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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.