Home / 103,537.90-155,306.85-99,163.90

Finding the Fourth Proportional to 103,537.90, 155,306.85 and 99,163.90

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Solution

The fourth proportional to 103,537.90, 155,306.85 and 99,163.90 is: 148,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,537.90 : 155,306.85 = 99,163.90 : x
  2. Step 2: Convert to fraction form
    103,537.90/155,306.85 = 99,163.90/x
  3. Step 3: Cross multiply
    103,537.90x = 155,306.85 × 99,163.90
  4. Step 4: Simplify right side
    103,537.90x = 15,400,832,942.72
  5. Step 5: Solve for x
    x = 15,400,832,942.72/103,537.90
  6. Step 6: Final answer
    x = 148,745.85

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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.