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Finding the Fourth Proportional to 120,020.93, 165,446.93 and 79,663.49

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Solution

The fourth proportional to 120,020.93, 165,446.93 and 79,663.49 is: 109,814.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.93 : 165,446.93 = 79,663.49 : x
  2. Step 2: Convert to fraction form
    120,020.93/165,446.93 = 79,663.49/x
  3. Step 3: Cross multiply
    120,020.93x = 165,446.93 × 79,663.49
  4. Step 4: Simplify right side
    120,020.93x = 13,180,079,455.27
  5. Step 5: Solve for x
    x = 13,180,079,455.27/120,020.93
  6. Step 6: Final answer
    x = 109,814.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.