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Finding the Fourth Proportional to 135,953.72, 203,720.99 and 72,782.22

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Solution

The fourth proportional to 135,953.72, 203,720.99 and 72,782.22 is: 109,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,953.72 : 203,720.99 = 72,782.22 : x
  2. Step 2: Convert to fraction form
    135,953.72/203,720.99 = 72,782.22/x
  3. Step 3: Cross multiply
    135,953.72x = 203,720.99 × 72,782.22
  4. Step 4: Simplify right side
    135,953.72x = 14,827,265,548.89
  5. Step 5: Solve for x
    x = 14,827,265,548.89/135,953.72
  6. Step 6: Final answer
    x = 109,061.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.