Home / 281,211.10-421,853.65-103,842.70

Finding the Fourth Proportional to 281,211.10, 421,853.65 and 103,842.70

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Solution

The fourth proportional to 281,211.10, 421,853.65 and 103,842.70 is: 155,777.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,211.10 : 421,853.65 = 103,842.70 : x
  2. Step 2: Convert to fraction form
    281,211.10/421,853.65 = 103,842.70/x
  3. Step 3: Cross multiply
    281,211.10x = 421,853.65 × 103,842.70
  4. Step 4: Simplify right side
    281,211.10x = 43,806,422,020.86
  5. Step 5: Solve for x
    x = 43,806,422,020.86/281,211.10
  6. Step 6: Final answer
    x = 155,777.71

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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.