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Finding the Fourth Proportional to 99,703.13, 137,512.53 and 63,896.49

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Solution

The fourth proportional to 99,703.13, 137,512.53 and 63,896.49 is: 88,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,703.13 : 137,512.53 = 63,896.49 : x
  2. Step 2: Convert to fraction form
    99,703.13/137,512.53 = 63,896.49/x
  3. Step 3: Cross multiply
    99,703.13x = 137,512.53 × 63,896.49
  4. Step 4: Simplify right side
    99,703.13x = 8,786,567,998.02
  5. Step 5: Solve for x
    x = 8,786,567,998.02/99,703.13
  6. Step 6: Final answer
    x = 88,127.31

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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.