Home / 112,505.78-168,675.30-68,122.10

Finding the Fourth Proportional to 112,505.78, 168,675.30 and 68,122.10

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Solution

The fourth proportional to 112,505.78, 168,675.30 and 68,122.10 is: 102,132.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,505.78 : 168,675.30 = 68,122.10 : x
  2. Step 2: Convert to fraction form
    112,505.78/168,675.30 = 68,122.10/x
  3. Step 3: Cross multiply
    112,505.78x = 168,675.30 × 68,122.10
  4. Step 4: Simplify right side
    112,505.78x = 11,490,515,654.13
  5. Step 5: Solve for x
    x = 11,490,515,654.13/112,505.78
  6. Step 6: Final answer
    x = 102,132.67

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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.