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Finding the Fourth Proportional to 135,477.42, 186,956.84 and 75,047.88

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Solution

The fourth proportional to 135,477.42, 186,956.84 and 75,047.88 is: 103,564.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,477.42 : 186,956.84 = 75,047.88 : x
  2. Step 2: Convert to fraction form
    135,477.42/186,956.84 = 75,047.88/x
  3. Step 3: Cross multiply
    135,477.42x = 186,956.84 × 75,047.88
  4. Step 4: Simplify right side
    135,477.42x = 14,030,714,493.50
  5. Step 5: Solve for x
    x = 14,030,714,493.50/135,477.42
  6. Step 6: Final answer
    x = 103,564.97

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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.