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Finding the Fourth Proportional to 123,426.64, 170,328.52 and 66,837.84

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Solution

The fourth proportional to 123,426.64, 170,328.52 and 66,837.84 is: 92,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,426.64 : 170,328.52 = 66,837.84 : x
  2. Step 2: Convert to fraction form
    123,426.64/170,328.52 = 66,837.84/x
  3. Step 3: Cross multiply
    123,426.64x = 170,328.52 × 66,837.84
  4. Step 4: Simplify right side
    123,426.64x = 11,384,390,367.20
  5. Step 5: Solve for x
    x = 11,384,390,367.20/123,426.64
  6. Step 6: Final answer
    x = 92,236.09

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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.