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Finding the Fourth Proportional to 123,243.98, 170,076.60 and 66,655.34

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Solution

The fourth proportional to 123,243.98, 170,076.60 and 66,655.34 is: 91,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,243.98 : 170,076.60 = 66,655.34 : x
  2. Step 2: Convert to fraction form
    123,243.98/170,076.60 = 66,655.34/x
  3. Step 3: Cross multiply
    123,243.98x = 170,076.60 × 66,655.34
  4. Step 4: Simplify right side
    123,243.98x = 11,336,513,599.04
  5. Step 5: Solve for x
    x = 11,336,513,599.04/123,243.98
  6. Step 6: Final answer
    x = 91,984.32

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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.