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Finding the Fourth Proportional to 157,169.11, 235,756.11 and 87,491.29

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Solution

The fourth proportional to 157,169.11, 235,756.11 and 87,491.29 is: 131,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,169.11 : 235,756.11 = 87,491.29 : x
  2. Step 2: Convert to fraction form
    157,169.11/235,756.11 = 87,491.29/x
  3. Step 3: Cross multiply
    157,169.11x = 235,756.11 × 87,491.29
  4. Step 4: Simplify right side
    157,169.11x = 20,626,606,189.28
  5. Step 5: Solve for x
    x = 20,626,606,189.28/157,169.11
  6. Step 6: Final answer
    x = 131,238.30

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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.