Home / 115,203.26-172,784.14-81,787.53

Finding the Fourth Proportional to 115,203.26, 172,784.14 and 81,787.53

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Solution

The fourth proportional to 115,203.26, 172,784.14 and 81,787.53 is: 122,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,203.26 : 172,784.14 = 81,787.53 : x
  2. Step 2: Convert to fraction form
    115,203.26/172,784.14 = 81,787.53/x
  3. Step 3: Cross multiply
    115,203.26x = 172,784.14 × 81,787.53
  4. Step 4: Simplify right side
    115,203.26x = 14,131,587,505.34
  5. Step 5: Solve for x
    x = 14,131,587,505.34/115,203.26
  6. Step 6: Final answer
    x = 122,666.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.