Home / 136,121.59-187,820.13-79,522.03

Finding the Fourth Proportional to 136,121.59, 187,820.13 and 79,522.03

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Solution

The fourth proportional to 136,121.59, 187,820.13 and 79,522.03 is: 109,724.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,121.59 : 187,820.13 = 79,522.03 : x
  2. Step 2: Convert to fraction form
    136,121.59/187,820.13 = 79,522.03/x
  3. Step 3: Cross multiply
    136,121.59x = 187,820.13 × 79,522.03
  4. Step 4: Simplify right side
    136,121.59x = 14,935,838,012.46
  5. Step 5: Solve for x
    x = 14,935,838,012.46/136,121.59
  6. Step 6: Final answer
    x = 109,724.24

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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.