Home / 136,178.05-187,931.06-82,432.66

Finding the Fourth Proportional to 136,178.05, 187,931.06 and 82,432.66

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Solution

The fourth proportional to 136,178.05, 187,931.06 and 82,432.66 is: 113,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,178.05 : 187,931.06 = 82,432.66 : x
  2. Step 2: Convert to fraction form
    136,178.05/187,931.06 = 82,432.66/x
  3. Step 3: Cross multiply
    136,178.05x = 187,931.06 × 82,432.66
  4. Step 4: Simplify right side
    136,178.05x = 15,491,657,172.42
  5. Step 5: Solve for x
    x = 15,491,657,172.42/136,178.05
  6. Step 6: Final answer
    x = 113,760.31

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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.