Home / 100,768.20-151,298.10-75,982.20

Finding the Fourth Proportional to 100,768.20, 151,298.10 and 75,982.20

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Solution

The fourth proportional to 100,768.20, 151,298.10 and 75,982.20 is: 114,083.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,768.20 : 151,298.10 = 75,982.20 : x
  2. Step 2: Convert to fraction form
    100,768.20/151,298.10 = 75,982.20/x
  3. Step 3: Cross multiply
    100,768.20x = 151,298.10 × 75,982.20
  4. Step 4: Simplify right side
    100,768.20x = 11,495,962,493.82
  5. Step 5: Solve for x
    x = 11,495,962,493.82/100,768.20
  6. Step 6: Final answer
    x = 114,083.24

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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.