Home / 149,770.49-206,686.76-81,787.93

Finding the Fourth Proportional to 149,770.49, 206,686.76 and 81,787.93

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Solution

The fourth proportional to 149,770.49, 206,686.76 and 81,787.93 is: 112,869.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,770.49 : 206,686.76 = 81,787.93 : x
  2. Step 2: Convert to fraction form
    149,770.49/206,686.76 = 81,787.93/x
  3. Step 3: Cross multiply
    149,770.49x = 206,686.76 × 81,787.93
  4. Step 4: Simplify right side
    149,770.49x = 16,904,481,333.15
  5. Step 5: Solve for x
    x = 16,904,481,333.15/149,770.49
  6. Step 6: Final answer
    x = 112,869.24

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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.