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Finding the Fourth Proportional to 108,898.31, 150,279.68 and 61,151.69

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Solution

The fourth proportional to 108,898.31, 150,279.68 and 61,151.69 is: 84,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,898.31 : 150,279.68 = 61,151.69 : x
  2. Step 2: Convert to fraction form
    108,898.31/150,279.68 = 61,151.69/x
  3. Step 3: Cross multiply
    108,898.31x = 150,279.68 × 61,151.69
  4. Step 4: Simplify right side
    108,898.31x = 9,189,856,933.24
  5. Step 5: Solve for x
    x = 9,189,856,933.24/108,898.31
  6. Step 6: Final answer
    x = 84,389.34

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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.