Home / 136,646.91-188,572.24-76,217.50

Finding the Fourth Proportional to 136,646.91, 188,572.24 and 76,217.50

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Solution

The fourth proportional to 136,646.91, 188,572.24 and 76,217.50 is: 105,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,646.91 : 188,572.24 = 76,217.50 : x
  2. Step 2: Convert to fraction form
    136,646.91/188,572.24 = 76,217.50/x
  3. Step 3: Cross multiply
    136,646.91x = 188,572.24 × 76,217.50
  4. Step 4: Simplify right side
    136,646.91x = 14,372,504,702.20
  5. Step 5: Solve for x
    x = 14,372,504,702.20/136,646.91
  6. Step 6: Final answer
    x = 105,179.88

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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.