Home / 100,748.10-151,221.18-76,833.26

Finding the Fourth Proportional to 100,748.10, 151,221.18 and 76,833.26

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Solution

The fourth proportional to 100,748.10, 151,221.18 and 76,833.26 is: 115,325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,748.10 : 151,221.18 = 76,833.26 : x
  2. Step 2: Convert to fraction form
    100,748.10/151,221.18 = 76,833.26/x
  3. Step 3: Cross multiply
    100,748.10x = 151,221.18 × 76,833.26
  4. Step 4: Simplify right side
    100,748.10x = 11,618,815,484.34
  5. Step 5: Solve for x
    x = 11,618,815,484.34/100,748.10
  6. Step 6: Final answer
    x = 115,325.41

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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.