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Finding the Fourth Proportional to 191,937.57, 264,958.78 and 123,987.67

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Solution

The fourth proportional to 191,937.57, 264,958.78 and 123,987.67 is: 171,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,937.57 : 264,958.78 = 123,987.67 : x
  2. Step 2: Convert to fraction form
    191,937.57/264,958.78 = 123,987.67/x
  3. Step 3: Cross multiply
    191,937.57x = 264,958.78 × 123,987.67
  4. Step 4: Simplify right side
    191,937.57x = 32,851,621,778.24
  5. Step 5: Solve for x
    x = 32,851,621,778.24/191,937.57
  6. Step 6: Final answer
    x = 171,157.85

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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.