Home / 99,440.75-148,964.30-86,974.85

Finding the Fourth Proportional to 99,440.75, 148,964.30 and 86,974.85

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Solution

The fourth proportional to 99,440.75, 148,964.30 and 86,974.85 is: 130,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,440.75 : 148,964.30 = 86,974.85 : x
  2. Step 2: Convert to fraction form
    99,440.75/148,964.30 = 86,974.85/x
  3. Step 3: Cross multiply
    99,440.75x = 148,964.30 × 86,974.85
  4. Step 4: Simplify right side
    99,440.75x = 12,956,147,585.39
  5. Step 5: Solve for x
    x = 12,956,147,585.39/99,440.75
  6. Step 6: Final answer
    x = 130,290.12

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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.