Home / 149,702.40-206,591.69-81,719.96

Finding the Fourth Proportional to 149,702.40, 206,591.69 and 81,719.96

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Solution

The fourth proportional to 149,702.40, 206,591.69 and 81,719.96 is: 112,774.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,702.40 : 206,591.69 = 81,719.96 : x
  2. Step 2: Convert to fraction form
    149,702.40/206,591.69 = 81,719.96/x
  3. Step 3: Cross multiply
    149,702.40x = 206,591.69 × 81,719.96
  4. Step 4: Simplify right side
    149,702.40x = 16,882,663,814.47
  5. Step 5: Solve for x
    x = 16,882,663,814.47/149,702.40
  6. Step 6: Final answer
    x = 112,774.84

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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.