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Finding the Fourth Proportional to 135,980.32, 187,652.48 and 75,550.72

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Solution

The fourth proportional to 135,980.32, 187,652.48 and 75,550.72 is: 104,259.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,980.32 : 187,652.48 = 75,550.72 : x
  2. Step 2: Convert to fraction form
    135,980.32/187,652.48 = 75,550.72/x
  3. Step 3: Cross multiply
    135,980.32x = 187,652.48 × 75,550.72
  4. Step 4: Simplify right side
    135,980.32x = 14,177,279,973.79
  5. Step 5: Solve for x
    x = 14,177,279,973.79/135,980.32
  6. Step 6: Final answer
    x = 104,259.79

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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.