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Finding the Fourth Proportional to 120,954.80, 166,805.96 and 75,618.32

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Solution

The fourth proportional to 120,954.80, 166,805.96 and 75,618.32 is: 104,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,954.80 : 166,805.96 = 75,618.32 : x
  2. Step 2: Convert to fraction form
    120,954.80/166,805.96 = 75,618.32/x
  3. Step 3: Cross multiply
    120,954.80x = 166,805.96 × 75,618.32
  4. Step 4: Simplify right side
    120,954.80x = 12,613,586,461.19
  5. Step 5: Solve for x
    x = 12,613,586,461.19/120,954.80
  6. Step 6: Final answer
    x = 104,283.47

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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.