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Finding the Fourth Proportional to 145,793.85, 218,751.20 and 69,853.92

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Solution

The fourth proportional to 145,793.85, 218,751.20 and 69,853.92 is: 104,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,793.85 : 218,751.20 = 69,853.92 : x
  2. Step 2: Convert to fraction form
    145,793.85/218,751.20 = 69,853.92/x
  3. Step 3: Cross multiply
    145,793.85x = 218,751.20 × 69,853.92
  4. Step 4: Simplify right side
    145,793.85x = 15,280,628,475.43
  5. Step 5: Solve for x
    x = 15,280,628,475.43/145,793.85
  6. Step 6: Final answer
    x = 104,809.83

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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.