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Finding the Fourth Proportional to 108,744.33, 149,998.11 and 78,573.93

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Solution

The fourth proportional to 108,744.33, 149,998.11 and 78,573.93 is: 108,382.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,744.33 : 149,998.11 = 78,573.93 : x
  2. Step 2: Convert to fraction form
    108,744.33/149,998.11 = 78,573.93/x
  3. Step 3: Cross multiply
    108,744.33x = 149,998.11 × 78,573.93
  4. Step 4: Simplify right side
    108,744.33x = 11,785,940,995.27
  5. Step 5: Solve for x
    x = 11,785,940,995.27/108,744.33
  6. Step 6: Final answer
    x = 108,382.12

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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.