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Finding the Fourth Proportional to 123,999.44, 170,829.92 and 86,208.08

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Solution

The fourth proportional to 123,999.44, 170,829.92 and 86,208.08 is: 118,766.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.44 : 170,829.92 = 86,208.08 : x
  2. Step 2: Convert to fraction form
    123,999.44/170,829.92 = 86,208.08/x
  3. Step 3: Cross multiply
    123,999.44x = 170,829.92 × 86,208.08
  4. Step 4: Simplify right side
    123,999.44x = 14,726,919,409.75
  5. Step 5: Solve for x
    x = 14,726,919,409.75/123,999.44
  6. Step 6: Final answer
    x = 118,766.02

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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.