Home / 148,389.12-204,775.20-80,405.76

Finding the Fourth Proportional to 148,389.12, 204,775.20 and 80,405.76

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Solution

The fourth proportional to 148,389.12, 204,775.20 and 80,405.76 is: 110,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,389.12 : 204,775.20 = 80,405.76 : x
  2. Step 2: Convert to fraction form
    148,389.12/204,775.20 = 80,405.76/x
  3. Step 3: Cross multiply
    148,389.12x = 204,775.20 × 80,405.76
  4. Step 4: Simplify right side
    148,389.12x = 16,465,105,585.15
  5. Step 5: Solve for x
    x = 16,465,105,585.15/148,389.12
  6. Step 6: Final answer
    x = 110,958.98

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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.