Home / 149,121.96-205,720.50-88,658.30

Finding the Fourth Proportional to 149,121.96, 205,720.50 and 88,658.30

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Solution

The fourth proportional to 149,121.96, 205,720.50 and 88,658.30 is: 122,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,121.96 : 205,720.50 = 88,658.30 : x
  2. Step 2: Convert to fraction form
    149,121.96/205,720.50 = 88,658.30/x
  3. Step 3: Cross multiply
    149,121.96x = 205,720.50 × 88,658.30
  4. Step 4: Simplify right side
    149,121.96x = 18,238,829,805.15
  5. Step 5: Solve for x
    x = 18,238,829,805.15/149,121.96
  6. Step 6: Final answer
    x = 122,308.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.