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Finding the Fourth Proportional to 121,817.52, 168,094.44 and 68,100.75

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Solution

The fourth proportional to 121,817.52, 168,094.44 and 68,100.75 is: 93,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,817.52 : 168,094.44 = 68,100.75 : x
  2. Step 2: Convert to fraction form
    121,817.52/168,094.44 = 68,100.75/x
  3. Step 3: Cross multiply
    121,817.52x = 168,094.44 × 68,100.75
  4. Step 4: Simplify right side
    121,817.52x = 11,447,357,434.83
  5. Step 5: Solve for x
    x = 11,447,357,434.83/121,817.52
  6. Step 6: Final answer
    x = 93,971.36

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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.