Home / 281,127.17-421,690.24-91,587.31

Finding the Fourth Proportional to 281,127.17, 421,690.24 and 91,587.31

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Solution

The fourth proportional to 281,127.17, 421,690.24 and 91,587.31 is: 137,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,127.17 : 421,690.24 = 91,587.31 : x
  2. Step 2: Convert to fraction form
    281,127.17/421,690.24 = 91,587.31/x
  3. Step 3: Cross multiply
    281,127.17x = 421,690.24 × 91,587.31
  4. Step 4: Simplify right side
    281,127.17x = 38,621,474,734.85
  5. Step 5: Solve for x
    x = 38,621,474,734.85/281,127.17
  6. Step 6: Final answer
    x = 137,380.80

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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.