Home / 148,840.80-205,396.72-85,174.52

Finding the Fourth Proportional to 148,840.80, 205,396.72 and 85,174.52

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Solution

The fourth proportional to 148,840.80, 205,396.72 and 85,174.52 is: 117,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,840.80 : 205,396.72 = 85,174.52 : x
  2. Step 2: Convert to fraction form
    148,840.80/205,396.72 = 85,174.52/x
  3. Step 3: Cross multiply
    148,840.80x = 205,396.72 × 85,174.52
  4. Step 4: Simplify right side
    148,840.80x = 17,494,567,035.57
  5. Step 5: Solve for x
    x = 17,494,567,035.57/148,840.80
  6. Step 6: Final answer
    x = 117,538.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.