Home / 136,121.72-187,820.30-79,522.16

Finding the Fourth Proportional to 136,121.72, 187,820.30 and 79,522.16

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Solution

The fourth proportional to 136,121.72, 187,820.30 and 79,522.16 is: 109,724.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,121.72 : 187,820.30 = 79,522.16 : x
  2. Step 2: Convert to fraction form
    136,121.72/187,820.30 = 79,522.16/x
  3. Step 3: Cross multiply
    136,121.72x = 187,820.30 × 79,522.16
  4. Step 4: Simplify right side
    136,121.72x = 14,935,875,207.55
  5. Step 5: Solve for x
    x = 14,935,875,207.55/136,121.72
  6. Step 6: Final answer
    x = 109,724.41

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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.