Home / 140,279.40-210,234.78-66,428.52

Finding the Fourth Proportional to 140,279.40, 210,234.78 and 66,428.52

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Solution

The fourth proportional to 140,279.40, 210,234.78 and 66,428.52 is: 99,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,279.40 : 210,234.78 = 66,428.52 : x
  2. Step 2: Convert to fraction form
    140,279.40/210,234.78 = 66,428.52/x
  3. Step 3: Cross multiply
    140,279.40x = 210,234.78 × 66,428.52
  4. Step 4: Simplify right side
    140,279.40x = 13,965,585,287.93
  5. Step 5: Solve for x
    x = 13,965,585,287.93/140,279.40
  6. Step 6: Final answer
    x = 99,555.50

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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.