Home / 149,298.20-206,033.98-81,316.50

Finding the Fourth Proportional to 149,298.20, 206,033.98 and 81,316.50

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Solution

The fourth proportional to 149,298.20, 206,033.98 and 81,316.50 is: 112,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,298.20 : 206,033.98 = 81,316.50 : x
  2. Step 2: Convert to fraction form
    149,298.20/206,033.98 = 81,316.50/x
  3. Step 3: Cross multiply
    149,298.20x = 206,033.98 × 81,316.50
  4. Step 4: Simplify right side
    149,298.20x = 16,753,963,105.84
  5. Step 5: Solve for x
    x = 16,753,963,105.84/149,298.20
  6. Step 6: Final answer
    x = 112,218.12

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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.