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Finding the Fourth Proportional to 117,244.61, 161,800.55 and 71,947.61

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Solution

The fourth proportional to 117,244.61, 161,800.55 and 71,947.61 is: 99,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,244.61 : 161,800.55 = 71,947.61 : x
  2. Step 2: Convert to fraction form
    117,244.61/161,800.55 = 71,947.61/x
  3. Step 3: Cross multiply
    117,244.61x = 161,800.55 × 71,947.61
  4. Step 4: Simplify right side
    117,244.61x = 11,641,162,869.19
  5. Step 5: Solve for x
    x = 11,641,162,869.19/117,244.61
  6. Step 6: Final answer
    x = 99,289.54

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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.