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Finding the Fourth Proportional to 112,296, 168,487.80 and 42,180.84

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Solution

The fourth proportional to 112,296, 168,487.80 and 42,180.84 is: 63,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,296 : 168,487.80 = 42,180.84 : x
  2. Step 2: Convert to fraction form
    112,296/168,487.80 = 42,180.84/x
  3. Step 3: Cross multiply
    112,296x = 168,487.80 × 42,180.84
  4. Step 4: Simplify right side
    112,296x = 7,106,956,933.75
  5. Step 5: Solve for x
    x = 7,106,956,933.75/112,296
  6. Step 6: Final answer
    x = 63,287.71

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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.