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Finding the Fourth Proportional to 100,168.29, 138,226.98 and 54,837.60

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Solution

The fourth proportional to 100,168.29, 138,226.98 and 54,837.60 is: 75,673.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,168.29 : 138,226.98 = 54,837.60 : x
  2. Step 2: Convert to fraction form
    100,168.29/138,226.98 = 54,837.60/x
  3. Step 3: Cross multiply
    100,168.29x = 138,226.98 × 54,837.60
  4. Step 4: Simplify right side
    100,168.29x = 7,580,035,838.45
  5. Step 5: Solve for x
    x = 7,580,035,838.45/100,168.29
  6. Step 6: Final answer
    x = 75,673.01

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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.