Home / 138,018.86-207,028.36-43,256.42

Finding the Fourth Proportional to 138,018.86, 207,028.36 and 43,256.42

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Solution

The fourth proportional to 138,018.86, 207,028.36 and 43,256.42 is: 64,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,018.86 : 207,028.36 = 43,256.42 : x
  2. Step 2: Convert to fraction form
    138,018.86/207,028.36 = 43,256.42/x
  3. Step 3: Cross multiply
    138,018.86x = 207,028.36 × 43,256.42
  4. Step 4: Simplify right side
    138,018.86x = 8,955,306,651.89
  5. Step 5: Solve for x
    x = 8,955,306,651.89/138,018.86
  6. Step 6: Final answer
    x = 64,884.66

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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.