Home / 281,002.10-421,306.05-103,486.10

Finding the Fourth Proportional to 281,002.10, 421,306.05 and 103,486.10

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Solution

The fourth proportional to 281,002.10, 421,306.05 and 103,486.10 is: 155,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,002.10 : 421,306.05 = 103,486.10 : x
  2. Step 2: Convert to fraction form
    281,002.10/421,306.05 = 103,486.10/x
  3. Step 3: Cross multiply
    281,002.10x = 421,306.05 × 103,486.10
  4. Step 4: Simplify right side
    281,002.10x = 43,599,320,020.91
  5. Step 5: Solve for x
    x = 43,599,320,020.91/281,002.10
  6. Step 6: Final answer
    x = 155,156.56

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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.