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Finding the Fourth Proportional to 122,164.89, 168,585.43 and 68,449.74

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Solution

The fourth proportional to 122,164.89, 168,585.43 and 68,449.74 is: 94,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,164.89 : 168,585.43 = 68,449.74 : x
  2. Step 2: Convert to fraction form
    122,164.89/168,585.43 = 68,449.74/x
  3. Step 3: Cross multiply
    122,164.89x = 168,585.43 × 68,449.74
  4. Step 4: Simplify right side
    122,164.89x = 11,539,627,666.11
  5. Step 5: Solve for x
    x = 11,539,627,666.11/122,164.89
  6. Step 6: Final answer
    x = 94,459.45

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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.