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Finding the Fourth Proportional to 145,620.82, 218,446.12 and 55,739.04

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Solution

The fourth proportional to 145,620.82, 218,446.12 and 55,739.04 is: 83,614.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,620.82 : 218,446.12 = 55,739.04 : x
  2. Step 2: Convert to fraction form
    145,620.82/218,446.12 = 55,739.04/x
  3. Step 3: Cross multiply
    145,620.82x = 218,446.12 × 55,739.04
  4. Step 4: Simplify right side
    145,620.82x = 12,175,977,020.52
  5. Step 5: Solve for x
    x = 12,175,977,020.52/145,620.82
  6. Step 6: Final answer
    x = 83,614.26

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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.