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Finding the Fourth Proportional to 120,578.16, 166,389.72 and 69,593.04

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Solution

The fourth proportional to 120,578.16, 166,389.72 and 69,593.04 is: 96,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,578.16 : 166,389.72 = 69,593.04 : x
  2. Step 2: Convert to fraction form
    120,578.16/166,389.72 = 69,593.04/x
  3. Step 3: Cross multiply
    120,578.16x = 166,389.72 × 69,593.04
  4. Step 4: Simplify right side
    120,578.16x = 11,579,566,439.55
  5. Step 5: Solve for x
    x = 11,579,566,439.55/120,578.16
  6. Step 6: Final answer
    x = 96,033.70

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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.