Home / 103,286.20-155,257.35-97,381.30

Finding the Fourth Proportional to 103,286.20, 155,257.35 and 97,381.30

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Solution

The fourth proportional to 103,286.20, 155,257.35 and 97,381.30 is: 146,381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,286.20 : 155,257.35 = 97,381.30 : x
  2. Step 2: Convert to fraction form
    103,286.20/155,257.35 = 97,381.30/x
  3. Step 3: Cross multiply
    103,286.20x = 155,257.35 × 97,381.30
  4. Step 4: Simplify right side
    103,286.20x = 15,119,162,577.56
  5. Step 5: Solve for x
    x = 15,119,162,577.56/103,286.20
  6. Step 6: Final answer
    x = 146,381.25

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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.