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Finding the Fourth Proportional to 135,710.40, 203,563.20 and 55,731.04

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Solution

The fourth proportional to 135,710.40, 203,563.20 and 55,731.04 is: 83,595.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,710.40 : 203,563.20 = 55,731.04 : x
  2. Step 2: Convert to fraction form
    135,710.40/203,563.20 = 55,731.04/x
  3. Step 3: Cross multiply
    135,710.40x = 203,563.20 × 55,731.04
  4. Step 4: Simplify right side
    135,710.40x = 11,344,788,841.73
  5. Step 5: Solve for x
    x = 11,344,788,841.73/135,710.40
  6. Step 6: Final answer
    x = 83,595.57

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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.