Home / 136,178.66-187,849.80-81,716.74

Finding the Fourth Proportional to 136,178.66, 187,849.80 and 81,716.74

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Solution

The fourth proportional to 136,178.66, 187,849.80 and 81,716.74 is: 112,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,178.66 : 187,849.80 = 81,716.74 : x
  2. Step 2: Convert to fraction form
    136,178.66/187,849.80 = 81,716.74/x
  3. Step 3: Cross multiply
    136,178.66x = 187,849.80 × 81,716.74
  4. Step 4: Simplify right side
    136,178.66x = 15,350,473,265.65
  5. Step 5: Solve for x
    x = 15,350,473,265.65/136,178.66
  6. Step 6: Final answer
    x = 112,723.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.