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Finding the Fourth Proportional to 148,856.80, 223,544.40 and 78,872.80

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Solution

The fourth proportional to 148,856.80, 223,544.40 and 78,872.80 is: 118,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,856.80 : 223,544.40 = 78,872.80 : x
  2. Step 2: Convert to fraction form
    148,856.80/223,544.40 = 78,872.80/x
  3. Step 3: Cross multiply
    148,856.80x = 223,544.40 × 78,872.80
  4. Step 4: Simplify right side
    148,856.80x = 17,631,572,752.32
  5. Step 5: Solve for x
    x = 17,631,572,752.32/148,856.80
  6. Step 6: Final answer
    x = 118,446.54

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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.