Home / 136,233.10-187,998.72-78,874.84

Finding the Fourth Proportional to 136,233.10, 187,998.72 and 78,874.84

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Solution

The fourth proportional to 136,233.10, 187,998.72 and 78,874.84 is: 108,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,233.10 : 187,998.72 = 78,874.84 : x
  2. Step 2: Convert to fraction form
    136,233.10/187,998.72 = 78,874.84/x
  3. Step 3: Cross multiply
    136,233.10x = 187,998.72 × 78,874.84
  4. Step 4: Simplify right side
    136,233.10x = 14,828,368,960.20
  5. Step 5: Solve for x
    x = 14,828,368,960.20/136,233.10
  6. Step 6: Final answer
    x = 108,845.57

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1.5x scale

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.