Home / 136,887.11-188,902.22-76,458.61

Finding the Fourth Proportional to 136,887.11, 188,902.22 and 76,458.61

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Solution

The fourth proportional to 136,887.11, 188,902.22 and 76,458.61 is: 105,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,887.11 : 188,902.22 = 76,458.61 : x
  2. Step 2: Convert to fraction form
    136,887.11/188,902.22 = 76,458.61/x
  3. Step 3: Cross multiply
    136,887.11x = 188,902.22 × 76,458.61
  4. Step 4: Simplify right side
    136,887.11x = 14,443,200,312.57
  5. Step 5: Solve for x
    x = 14,443,200,312.57/136,887.11
  6. Step 6: Final answer
    x = 105,511.77

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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.