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Finding the Fourth Proportional to 194,124.92, 291,129.92 and 87,447.21

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Solution

The fourth proportional to 194,124.92, 291,129.92 and 87,447.21 is: 131,144.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,124.92 : 291,129.92 = 87,447.21 : x
  2. Step 2: Convert to fraction form
    194,124.92/291,129.92 = 87,447.21/x
  3. Step 3: Cross multiply
    194,124.92x = 291,129.92 × 87,447.21
  4. Step 4: Simplify right side
    194,124.92x = 25,458,498,814.29
  5. Step 5: Solve for x
    x = 25,458,498,814.29/194,124.92
  6. Step 6: Final answer
    x = 131,144.93

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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.