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Finding the Fourth Proportional to 120,952.80, 166,803.20 and 75,616.32

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Solution

The fourth proportional to 120,952.80, 166,803.20 and 75,616.32 is: 104,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,952.80 : 166,803.20 = 75,616.32 : x
  2. Step 2: Convert to fraction form
    120,952.80/166,803.20 = 75,616.32/x
  3. Step 3: Cross multiply
    120,952.80x = 166,803.20 × 75,616.32
  4. Step 4: Simplify right side
    120,952.80x = 12,613,044,148.22
  5. Step 5: Solve for x
    x = 12,613,044,148.22/120,952.80
  6. Step 6: Final answer
    x = 104,280.71

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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.