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Finding the Fourth Proportional to 100,568.03, 138,783.51 and 54,627.39

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Solution

The fourth proportional to 100,568.03, 138,783.51 and 54,627.39 is: 75,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,568.03 : 138,783.51 = 54,627.39 : x
  2. Step 2: Convert to fraction form
    100,568.03/138,783.51 = 54,627.39/x
  3. Step 3: Cross multiply
    100,568.03x = 138,783.51 × 54,627.39
  4. Step 4: Simplify right side
    100,568.03x = 7,581,380,926.34
  5. Step 5: Solve for x
    x = 7,581,380,926.34/100,568.03
  6. Step 6: Final answer
    x = 75,385.60

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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.