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Finding the Fourth Proportional to 134,774.60, 201,870.30 and 72,372.20

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Solution

The fourth proportional to 134,774.60, 201,870.30 and 72,372.20 is: 108,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,774.60 : 201,870.30 = 72,372.20 : x
  2. Step 2: Convert to fraction form
    134,774.60/201,870.30 = 72,372.20/x
  3. Step 3: Cross multiply
    134,774.60x = 201,870.30 × 72,372.20
  4. Step 4: Simplify right side
    134,774.60x = 14,609,797,725.66
  5. Step 5: Solve for x
    x = 14,609,797,725.66/134,774.60
  6. Step 6: Final answer
    x = 108,401.71

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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.