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Finding the Fourth Proportional to 148,861.80, 223,551.90 and 78,877.80

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Solution

The fourth proportional to 148,861.80, 223,551.90 and 78,877.80 is: 118,454.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,861.80 : 223,551.90 = 78,877.80 : x
  2. Step 2: Convert to fraction form
    148,861.80/223,551.90 = 78,877.80/x
  3. Step 3: Cross multiply
    148,861.80x = 223,551.90 × 78,877.80
  4. Step 4: Simplify right side
    148,861.80x = 17,633,282,057.82
  5. Step 5: Solve for x
    x = 17,633,282,057.82/148,861.80
  6. Step 6: Final answer
    x = 118,454.04

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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.