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Finding the Fourth Proportional to 123,573.64, 170,532.32 and 66,984.88

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Solution

The fourth proportional to 123,573.64, 170,532.32 and 66,984.88 is: 92,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,573.64 : 170,532.32 = 66,984.88 : x
  2. Step 2: Convert to fraction form
    123,573.64/170,532.32 = 66,984.88/x
  3. Step 3: Cross multiply
    123,573.64x = 170,532.32 × 66,984.88
  4. Step 4: Simplify right side
    123,573.64x = 11,423,086,991.32
  5. Step 5: Solve for x
    x = 11,423,086,991.32/123,573.64
  6. Step 6: Final answer
    x = 92,439.51

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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.