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Finding the Fourth Proportional to 122,005.93, 168,368.14 and 68,290.93

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Solution

The fourth proportional to 122,005.93, 168,368.14 and 68,290.93 is: 94,241.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,005.93 : 168,368.14 = 68,290.93 : x
  2. Step 2: Convert to fraction form
    122,005.93/168,368.14 = 68,290.93/x
  3. Step 3: Cross multiply
    122,005.93x = 168,368.14 × 68,290.93
  4. Step 4: Simplify right side
    122,005.93x = 11,498,016,862.97
  5. Step 5: Solve for x
    x = 11,498,016,862.97/122,005.93
  6. Step 6: Final answer
    x = 94,241.46

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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.