Home / 148,412.20-204,808.38-80,431.12

Finding the Fourth Proportional to 148,412.20, 204,808.38 and 80,431.12

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Solution

The fourth proportional to 148,412.20, 204,808.38 and 80,431.12 is: 110,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,412.20 : 204,808.38 = 80,431.12 : x
  2. Step 2: Convert to fraction form
    148,412.20/204,808.38 = 80,431.12/x
  3. Step 3: Cross multiply
    148,412.20x = 204,808.38 × 80,431.12
  4. Step 4: Simplify right side
    148,412.20x = 16,472,967,388.79
  5. Step 5: Solve for x
    x = 16,472,967,388.79/148,412.20
  6. Step 6: Final answer
    x = 110,994.70

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1.5x scale

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.