Home / 138,162.12-207,243.16-38,322.32

Finding the Fourth Proportional to 138,162.12, 207,243.16 and 38,322.32

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Solution

The fourth proportional to 138,162.12, 207,243.16 and 38,322.32 is: 57,483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,162.12 : 207,243.16 = 38,322.32 : x
  2. Step 2: Convert to fraction form
    138,162.12/207,243.16 = 38,322.32/x
  3. Step 3: Cross multiply
    138,162.12x = 207,243.16 × 38,322.32
  4. Step 4: Simplify right side
    138,162.12x = 7,942,037,659.12
  5. Step 5: Solve for x
    x = 7,942,037,659.12/138,162.12
  6. Step 6: Final answer
    x = 57,483.47

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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.