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Finding the Fourth Proportional to 123,187.50, 169,998.75 and 66,598.88

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Solution

The fourth proportional to 123,187.50, 169,998.75 and 66,598.88 is: 91,906.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,187.50 : 169,998.75 = 66,598.88 : x
  2. Step 2: Convert to fraction form
    123,187.50/169,998.75 = 66,598.88/x
  3. Step 3: Cross multiply
    123,187.50x = 169,998.75 × 66,598.88
  4. Step 4: Simplify right side
    123,187.50x = 11,321,725,501.41
  5. Step 5: Solve for x
    x = 11,321,725,501.41/123,187.50
  6. Step 6: Final answer
    x = 91,906.45

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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.