Home / 138,655.05-207,982.59-45,160.80

Finding the Fourth Proportional to 138,655.05, 207,982.59 and 45,160.80

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Solution

The fourth proportional to 138,655.05, 207,982.59 and 45,160.80 is: 67,741.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,655.05 : 207,982.59 = 45,160.80 : x
  2. Step 2: Convert to fraction form
    138,655.05/207,982.59 = 45,160.80/x
  3. Step 3: Cross multiply
    138,655.05x = 207,982.59 × 45,160.80
  4. Step 4: Simplify right side
    138,655.05x = 9,392,660,150.47
  5. Step 5: Solve for x
    x = 9,392,660,150.47/138,655.05
  6. Step 6: Final answer
    x = 67,741.20

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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.