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Finding the Fourth Proportional to 123,473.58, 170,393.58 and 66,885

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Solution

The fourth proportional to 123,473.58, 170,393.58 and 66,885 is: 92,301.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,473.58 : 170,393.58 = 66,885 : x
  2. Step 2: Convert to fraction form
    123,473.58/170,393.58 = 66,885/x
  3. Step 3: Cross multiply
    123,473.58x = 170,393.58 × 66,885
  4. Step 4: Simplify right side
    123,473.58x = 11,396,774,598.30
  5. Step 5: Solve for x
    x = 11,396,774,598.30/123,473.58
  6. Step 6: Final answer
    x = 92,301.32

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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.