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Finding the Fourth Proportional to 121,865.63, 168,173.15 and 68,150.14

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Solution

The fourth proportional to 121,865.63, 168,173.15 and 68,150.14 is: 94,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,865.63 : 168,173.15 = 68,150.14 : x
  2. Step 2: Convert to fraction form
    121,865.63/168,173.15 = 68,150.14/x
  3. Step 3: Cross multiply
    121,865.63x = 168,173.15 × 68,150.14
  4. Step 4: Simplify right side
    121,865.63x = 11,461,022,955.56
  5. Step 5: Solve for x
    x = 11,461,022,955.56/121,865.63
  6. Step 6: Final answer
    x = 94,046.40

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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.