Home / 135,981.70-204,045.45-57,103.90

Finding the Fourth Proportional to 135,981.70, 204,045.45 and 57,103.90

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Solution

The fourth proportional to 135,981.70, 204,045.45 and 57,103.90 is: 85,686.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,981.70 : 204,045.45 = 57,103.90 : x
  2. Step 2: Convert to fraction form
    135,981.70/204,045.45 = 57,103.90/x
  3. Step 3: Cross multiply
    135,981.70x = 204,045.45 × 57,103.90
  4. Step 4: Simplify right side
    135,981.70x = 11,651,790,972.26
  5. Step 5: Solve for x
    x = 11,651,790,972.26/135,981.70
  6. Step 6: Final answer
    x = 85,686.46

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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.