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Finding the Fourth Proportional to 108,079.65, 149,028.62 and 69,788.91

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Solution

The fourth proportional to 108,079.65, 149,028.62 and 69,788.91 is: 96,230.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,079.65 : 149,028.62 = 69,788.91 : x
  2. Step 2: Convert to fraction form
    108,079.65/149,028.62 = 69,788.91/x
  3. Step 3: Cross multiply
    108,079.65x = 149,028.62 × 69,788.91
  4. Step 4: Simplify right side
    108,079.65x = 10,400,544,948.60
  5. Step 5: Solve for x
    x = 10,400,544,948.60/108,079.65
  6. Step 6: Final answer
    x = 96,230.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.