Home / 138,083.08-207,145.12-43,321.05

Finding the Fourth Proportional to 138,083.08, 207,145.12 and 43,321.05

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Solution

The fourth proportional to 138,083.08, 207,145.12 and 43,321.05 is: 64,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,083.08 : 207,145.12 = 43,321.05 : x
  2. Step 2: Convert to fraction form
    138,083.08/207,145.12 = 43,321.05/x
  3. Step 3: Cross multiply
    138,083.08x = 207,145.12 × 43,321.05
  4. Step 4: Simplify right side
    138,083.08x = 8,973,744,778.14
  5. Step 5: Solve for x
    x = 8,973,744,778.14/138,083.08
  6. Step 6: Final answer
    x = 64,988.01

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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.