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Finding the Fourth Proportional to 123,497.70, 170,426.73 and 66,909.07

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Solution

The fourth proportional to 123,497.70, 170,426.73 and 66,909.07 is: 92,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,497.70 : 170,426.73 = 66,909.07 : x
  2. Step 2: Convert to fraction form
    123,497.70/170,426.73 = 66,909.07/x
  3. Step 3: Cross multiply
    123,497.70x = 170,426.73 × 66,909.07
  4. Step 4: Simplify right side
    123,497.70x = 11,403,094,007.44
  5. Step 5: Solve for x
    x = 11,403,094,007.44/123,497.70
  6. Step 6: Final answer
    x = 92,334.46

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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.