Home / 138,454.57-208,057.06-75,321.34

Finding the Fourth Proportional to 138,454.57, 208,057.06 and 75,321.34

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Solution

The fourth proportional to 138,454.57, 208,057.06 and 75,321.34 is: 113,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,454.57 : 208,057.06 = 75,321.34 : x
  2. Step 2: Convert to fraction form
    138,454.57/208,057.06 = 75,321.34/x
  3. Step 3: Cross multiply
    138,454.57x = 208,057.06 × 75,321.34
  4. Step 4: Simplify right side
    138,454.57x = 15,671,136,555.66
  5. Step 5: Solve for x
    x = 15,671,136,555.66/138,454.57
  6. Step 6: Final answer
    x = 113,186.13

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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.