Home / 115,042.73-172,334.32-91,390.19

Finding the Fourth Proportional to 115,042.73, 172,334.32 and 91,390.19

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Solution

The fourth proportional to 115,042.73, 172,334.32 and 91,390.19 is: 136,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,042.73 : 172,334.32 = 91,390.19 : x
  2. Step 2: Convert to fraction form
    115,042.73/172,334.32 = 91,390.19/x
  3. Step 3: Cross multiply
    115,042.73x = 172,334.32 × 91,390.19
  4. Step 4: Simplify right side
    115,042.73x = 15,749,665,158.17
  5. Step 5: Solve for x
    x = 15,749,665,158.17/115,042.73
  6. Step 6: Final answer
    x = 136,902.75

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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.