Home / 115,102.60-172,424.26-91,450.20

Finding the Fourth Proportional to 115,102.60, 172,424.26 and 91,450.20

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Solution

The fourth proportional to 115,102.60, 172,424.26 and 91,450.20 is: 136,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,102.60 : 172,424.26 = 91,450.20 : x
  2. Step 2: Convert to fraction form
    115,102.60/172,424.26 = 91,450.20/x
  3. Step 3: Cross multiply
    115,102.60x = 172,424.26 × 91,450.20
  4. Step 4: Simplify right side
    115,102.60x = 15,768,233,061.85
  5. Step 5: Solve for x
    x = 15,768,233,061.85/115,102.60
  6. Step 6: Final answer
    x = 136,992.85

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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.