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Finding the Fourth Proportional to 135,751.88, 187,334.72 and 75,321.22

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Solution

The fourth proportional to 135,751.88, 187,334.72 and 75,321.22 is: 103,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,751.88 : 187,334.72 = 75,321.22 : x
  2. Step 2: Convert to fraction form
    135,751.88/187,334.72 = 75,321.22/x
  3. Step 3: Cross multiply
    135,751.88x = 187,334.72 × 75,321.22
  4. Step 4: Simplify right side
    135,751.88x = 14,110,279,658.76
  5. Step 5: Solve for x
    x = 14,110,279,658.76/135,751.88
  6. Step 6: Final answer
    x = 103,941.69

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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.