Home / 128,850.90-193,276.35-76,233.30

Finding the Fourth Proportional to 128,850.90, 193,276.35 and 76,233.30

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Solution

The fourth proportional to 128,850.90, 193,276.35 and 76,233.30 is: 114,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,850.90 : 193,276.35 = 76,233.30 : x
  2. Step 2: Convert to fraction form
    128,850.90/193,276.35 = 76,233.30/x
  3. Step 3: Cross multiply
    128,850.90x = 193,276.35 × 76,233.30
  4. Step 4: Simplify right side
    128,850.90x = 14,734,093,972.46
  5. Step 5: Solve for x
    x = 14,734,093,972.46/128,850.90
  6. Step 6: Final answer
    x = 114,349.95

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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.