Home / 124,787.12-172,282.55-81,221.27

Finding the Fourth Proportional to 124,787.12, 172,282.55 and 81,221.27

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Solution

The fourth proportional to 124,787.12, 172,282.55 and 81,221.27 is: 112,135.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,787.12 : 172,282.55 = 81,221.27 : x
  2. Step 2: Convert to fraction form
    124,787.12/172,282.55 = 81,221.27/x
  3. Step 3: Cross multiply
    124,787.12x = 172,282.55 × 81,221.27
  4. Step 4: Simplify right side
    124,787.12x = 13,993,006,242.32
  5. Step 5: Solve for x
    x = 13,993,006,242.32/124,787.12
  6. Step 6: Final answer
    x = 112,135.02

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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.