Home / 149,394.95-206,165.04-81,411.90

Finding the Fourth Proportional to 149,394.95, 206,165.04 and 81,411.90

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Solution

The fourth proportional to 149,394.95, 206,165.04 and 81,411.90 is: 112,348.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,394.95 : 206,165.04 = 81,411.90 : x
  2. Step 2: Convert to fraction form
    149,394.95/206,165.04 = 81,411.90/x
  3. Step 3: Cross multiply
    149,394.95x = 206,165.04 × 81,411.90
  4. Step 4: Simplify right side
    149,394.95x = 16,784,287,619.98
  5. Step 5: Solve for x
    x = 16,784,287,619.98/149,394.95
  6. Step 6: Final answer
    x = 112,348.43

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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.