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Finding the Fourth Proportional to 108,967.82, 150,379.44 and 61,220.21

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Solution

The fourth proportional to 108,967.82, 150,379.44 and 61,220.21 is: 84,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,967.82 : 150,379.44 = 61,220.21 : x
  2. Step 2: Convert to fraction form
    108,967.82/150,379.44 = 61,220.21/x
  3. Step 3: Cross multiply
    108,967.82x = 150,379.44 × 61,220.21
  4. Step 4: Simplify right side
    108,967.82x = 9,206,260,896.48
  5. Step 5: Solve for x
    x = 9,206,260,896.48/108,967.82
  6. Step 6: Final answer
    x = 84,486.05

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1.5x scale

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.