Home / 115,023.78-172,536.48-40,143.60

Finding the Fourth Proportional to 115,023.78, 172,536.48 and 40,143.60

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Solution

The fourth proportional to 115,023.78, 172,536.48 and 40,143.60 is: 60,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,023.78 : 172,536.48 = 40,143.60 : x
  2. Step 2: Convert to fraction form
    115,023.78/172,536.48 = 40,143.60/x
  3. Step 3: Cross multiply
    115,023.78x = 172,536.48 × 40,143.60
  4. Step 4: Simplify right side
    115,023.78x = 6,926,235,438.53
  5. Step 5: Solve for x
    x = 6,926,235,438.53/115,023.78
  6. Step 6: Final answer
    x = 60,215.68

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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.