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Finding the Fourth Proportional to 135,034.50, 186,347.61 and 75,418.50

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Solution

The fourth proportional to 135,034.50, 186,347.61 and 75,418.50 is: 104,077.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,034.50 : 186,347.61 = 75,418.50 : x
  2. Step 2: Convert to fraction form
    135,034.50/186,347.61 = 75,418.50/x
  3. Step 3: Cross multiply
    135,034.50x = 186,347.61 × 75,418.50
  4. Step 4: Simplify right side
    135,034.50x = 14,054,057,224.79
  5. Step 5: Solve for x
    x = 14,054,057,224.79/135,034.50
  6. Step 6: Final answer
    x = 104,077.53

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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.