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Finding the Fourth Proportional to 148,093.80, 221,885.55 and 69,045.90

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Solution

The fourth proportional to 148,093.80, 221,885.55 and 69,045.90 is: 103,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,093.80 : 221,885.55 = 69,045.90 : x
  2. Step 2: Convert to fraction form
    148,093.80/221,885.55 = 69,045.90/x
  3. Step 3: Cross multiply
    148,093.80x = 221,885.55 × 69,045.90
  4. Step 4: Simplify right side
    148,093.80x = 15,320,287,496.75
  5. Step 5: Solve for x
    x = 15,320,287,496.75/148,093.80
  6. Step 6: Final answer
    x = 103,449.89

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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.