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Finding the Fourth Proportional to 135,751.71, 187,334.49 and 75,321.03

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Solution

The fourth proportional to 135,751.71, 187,334.49 and 75,321.03 is: 103,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,751.71 : 187,334.49 = 75,321.03 : x
  2. Step 2: Convert to fraction form
    135,751.71/187,334.49 = 75,321.03/x
  3. Step 3: Cross multiply
    135,751.71x = 187,334.49 × 75,321.03
  4. Step 4: Simplify right side
    135,751.71x = 14,110,226,741.32
  5. Step 5: Solve for x
    x = 14,110,226,741.32/135,751.71
  6. Step 6: Final answer
    x = 103,941.43

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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.