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Finding the Fourth Proportional to 101,584.60, 140,187.78 and 61,290.59

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Solution

The fourth proportional to 101,584.60, 140,187.78 and 61,290.59 is: 84,581.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,584.60 : 140,187.78 = 61,290.59 : x
  2. Step 2: Convert to fraction form
    101,584.60/140,187.78 = 61,290.59/x
  3. Step 3: Cross multiply
    101,584.60x = 140,187.78 × 61,290.59
  4. Step 4: Simplify right side
    101,584.60x = 8,592,191,046.05
  5. Step 5: Solve for x
    x = 8,592,191,046.05/101,584.60
  6. Step 6: Final answer
    x = 84,581.63

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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.