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Finding the Fourth Proportional to 117,029.95, 161,520.65 and 71,733.13

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Solution

The fourth proportional to 117,029.95, 161,520.65 and 71,733.13 is: 99,003.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,029.95 : 161,520.65 = 71,733.13 : x
  2. Step 2: Convert to fraction form
    117,029.95/161,520.65 = 71,733.13/x
  3. Step 3: Cross multiply
    117,029.95x = 161,520.65 × 71,733.13
  4. Step 4: Simplify right side
    117,029.95x = 11,586,381,784.13
  5. Step 5: Solve for x
    x = 11,586,381,784.13/117,029.95
  6. Step 6: Final answer
    x = 99,003.56

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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.