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Finding the Fourth Proportional to 133,704.96, 200,421.12 and 74,566.40

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Solution

The fourth proportional to 133,704.96, 200,421.12 and 74,566.40 is: 111,773.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,704.96 : 200,421.12 = 74,566.40 : x
  2. Step 2: Convert to fraction form
    133,704.96/200,421.12 = 74,566.40/x
  3. Step 3: Cross multiply
    133,704.96x = 200,421.12 × 74,566.40
  4. Step 4: Simplify right side
    133,704.96x = 14,944,681,402.37
  5. Step 5: Solve for x
    x = 14,944,681,402.37/133,704.96
  6. Step 6: Final answer
    x = 111,773.58

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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.