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Finding the Fourth Proportional to 80,352.16, 120,409.42 and 75,858.91

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Solution

The fourth proportional to 80,352.16, 120,409.42 and 75,858.91 is: 113,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,352.16 : 120,409.42 = 75,858.91 : x
  2. Step 2: Convert to fraction form
    80,352.16/120,409.42 = 75,858.91/x
  3. Step 3: Cross multiply
    80,352.16x = 120,409.42 × 75,858.91
  4. Step 4: Simplify right side
    80,352.16x = 9,134,127,354.93
  5. Step 5: Solve for x
    x = 9,134,127,354.93/80,352.16
  6. Step 6: Final answer
    x = 113,676.19

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1.5x scale

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.