Home / 120,699.24-166,455.92-75,381.36

Finding the Fourth Proportional to 120,699.24, 166,455.92 and 75,381.36

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Solution

The fourth proportional to 120,699.24, 166,455.92 and 75,381.36 is: 103,958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,699.24 : 166,455.92 = 75,381.36 : x
  2. Step 2: Convert to fraction form
    120,699.24/166,455.92 = 75,381.36/x
  3. Step 3: Cross multiply
    120,699.24x = 166,455.92 × 75,381.36
  4. Step 4: Simplify right side
    120,699.24x = 12,547,673,629.65
  5. Step 5: Solve for x
    x = 12,547,673,629.65/120,699.24
  6. Step 6: Final answer
    x = 103,958.18

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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.