Home / 80,895.47-121,354.13-75,974.72

Finding the Fourth Proportional to 80,895.47, 121,354.13 and 75,974.72

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Solution

The fourth proportional to 80,895.47, 121,354.13 and 75,974.72 is: 113,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,895.47 : 121,354.13 = 75,974.72 : x
  2. Step 2: Convert to fraction form
    80,895.47/121,354.13 = 75,974.72/x
  3. Step 3: Cross multiply
    80,895.47x = 121,354.13 × 75,974.72
  4. Step 4: Simplify right side
    80,895.47x = 9,219,845,630.76
  5. Step 5: Solve for x
    x = 9,219,845,630.76/80,895.47
  6. Step 6: Final answer
    x = 113,972.34

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1.5x scale

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.