Home / 80,934.90-121,402.35-76,010.10

Finding the Fourth Proportional to 80,934.90, 121,402.35 and 76,010.10

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Solution

The fourth proportional to 80,934.90, 121,402.35 and 76,010.10 is: 114,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.90 : 121,402.35 = 76,010.10 : x
  2. Step 2: Convert to fraction form
    80,934.90/121,402.35 = 76,010.10/x
  3. Step 3: Cross multiply
    80,934.90x = 121,402.35 × 76,010.10
  4. Step 4: Simplify right side
    80,934.90x = 9,227,804,763.74
  5. Step 5: Solve for x
    x = 9,227,804,763.74/80,934.90
  6. Step 6: Final answer
    x = 114,015.15

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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.