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Finding the Fourth Proportional to 135,503.52, 186,994.71 and 75,077.97

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Solution

The fourth proportional to 135,503.52, 186,994.71 and 75,077.97 is: 103,607.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,503.52 : 186,994.71 = 75,077.97 : x
  2. Step 2: Convert to fraction form
    135,503.52/186,994.71 = 75,077.97/x
  3. Step 3: Cross multiply
    135,503.52x = 186,994.71 × 75,077.97
  4. Step 4: Simplify right side
    135,503.52x = 14,039,183,227.54
  5. Step 5: Solve for x
    x = 14,039,183,227.54/135,503.52
  6. Step 6: Final answer
    x = 103,607.52

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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.