Home / 281,306.10-421,972.74-91,766.10

Finding the Fourth Proportional to 281,306.10, 421,972.74 and 91,766.10

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Solution

The fourth proportional to 281,306.10, 421,972.74 and 91,766.10 is: 137,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,306.10 : 421,972.74 = 91,766.10 : x
  2. Step 2: Convert to fraction form
    281,306.10/421,972.74 = 91,766.10/x
  3. Step 3: Cross multiply
    281,306.10x = 421,972.74 × 91,766.10
  4. Step 4: Simplify right side
    281,306.10x = 38,722,792,656.11
  5. Step 5: Solve for x
    x = 38,722,792,656.11/281,306.10
  6. Step 6: Final answer
    x = 137,653.58

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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.