Home / 281,215.40-421,885.06-81,544.12

Finding the Fourth Proportional to 281,215.40, 421,885.06 and 81,544.12

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Solution

The fourth proportional to 281,215.40, 421,885.06 and 81,544.12 is: 122,334.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,215.40 : 421,885.06 = 81,544.12 : x
  2. Step 2: Convert to fraction form
    281,215.40/421,885.06 = 81,544.12/x
  3. Step 3: Cross multiply
    281,215.40x = 421,885.06 × 81,544.12
  4. Step 4: Simplify right side
    281,215.40x = 34,402,244,700.27
  5. Step 5: Solve for x
    x = 34,402,244,700.27/281,215.40
  6. Step 6: Final answer
    x = 122,334.14

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1.5x scale

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.