Home / 120,161.57-165,816.32-66,443.04

Finding the Fourth Proportional to 120,161.57, 165,816.32 and 66,443.04

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Solution

The fourth proportional to 120,161.57, 165,816.32 and 66,443.04 is: 91,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,161.57 : 165,816.32 = 66,443.04 : x
  2. Step 2: Convert to fraction form
    120,161.57/165,816.32 = 66,443.04/x
  3. Step 3: Cross multiply
    120,161.57x = 165,816.32 × 66,443.04
  4. Step 4: Simplify right side
    120,161.57x = 11,017,340,050.20
  5. Step 5: Solve for x
    x = 11,017,340,050.20/120,161.57
  6. Step 6: Final answer
    x = 91,687.72

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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.