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Finding the Fourth Proportional to 100,768.56, 151,109.10 and 58,690.68

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Solution

The fourth proportional to 100,768.56, 151,109.10 and 58,690.68 is: 88,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,768.56 : 151,109.10 = 58,690.68 : x
  2. Step 2: Convert to fraction form
    100,768.56/151,109.10 = 58,690.68/x
  3. Step 3: Cross multiply
    100,768.56x = 151,109.10 × 58,690.68
  4. Step 4: Simplify right side
    100,768.56x = 8,868,695,833.19
  5. Step 5: Solve for x
    x = 8,868,695,833.19/100,768.56
  6. Step 6: Final answer
    x = 88,010.54

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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.