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Finding the Fourth Proportional to 132,560.70, 182,873.32 and 78,815.17

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Solution

The fourth proportional to 132,560.70, 182,873.32 and 78,815.17 is: 108,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,560.70 : 182,873.32 = 78,815.17 : x
  2. Step 2: Convert to fraction form
    132,560.70/182,873.32 = 78,815.17/x
  3. Step 3: Cross multiply
    132,560.70x = 182,873.32 × 78,815.17
  4. Step 4: Simplify right side
    132,560.70x = 14,413,191,804.26
  5. Step 5: Solve for x
    x = 14,413,191,804.26/132,560.70
  6. Step 6: Final answer
    x = 108,729.00

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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.