Home / 281,157.24-421,714.26-103,631.16

Finding the Fourth Proportional to 281,157.24, 421,714.26 and 103,631.16

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Solution

The fourth proportional to 281,157.24, 421,714.26 and 103,631.16 is: 155,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,157.24 : 421,714.26 = 103,631.16 : x
  2. Step 2: Convert to fraction form
    281,157.24/421,714.26 = 103,631.16/x
  3. Step 3: Cross multiply
    281,157.24x = 421,714.26 × 103,631.16
  4. Step 4: Simplify right side
    281,157.24x = 43,702,737,952.34
  5. Step 5: Solve for x
    x = 43,702,737,952.34/281,157.24
  6. Step 6: Final answer
    x = 155,438.78

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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.