Home / 281,146.40-421,719.60-81,473.30

Finding the Fourth Proportional to 281,146.40, 421,719.60 and 81,473.30

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Solution

The fourth proportional to 281,146.40, 421,719.60 and 81,473.30 is: 122,209.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,146.40 : 421,719.60 = 81,473.30 : x
  2. Step 2: Convert to fraction form
    281,146.40/421,719.60 = 81,473.30/x
  3. Step 3: Cross multiply
    281,146.40x = 421,719.60 × 81,473.30
  4. Step 4: Simplify right side
    281,146.40x = 34,358,887,486.68
  5. Step 5: Solve for x
    x = 34,358,887,486.68/281,146.40
  6. Step 6: Final answer
    x = 122,209.95

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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.