Home / 138,019.86-207,018.24-38,181.30

Finding the Fourth Proportional to 138,019.86, 207,018.24 and 38,181.30

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Solution

The fourth proportional to 138,019.86, 207,018.24 and 38,181.30 is: 57,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,019.86 : 207,018.24 = 38,181.30 : x
  2. Step 2: Convert to fraction form
    138,019.86/207,018.24 = 38,181.30/x
  3. Step 3: Cross multiply
    138,019.86x = 207,018.24 × 38,181.30
  4. Step 4: Simplify right side
    138,019.86x = 7,904,225,526.91
  5. Step 5: Solve for x
    x = 7,904,225,526.91/138,019.86
  6. Step 6: Final answer
    x = 57,268.75

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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.