Home / 132,409.36-182,783.82-78,711.76

Finding the Fourth Proportional to 132,409.36, 182,783.82 and 78,711.76

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Solution

The fourth proportional to 132,409.36, 182,783.82 and 78,711.76 is: 108,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,409.36 : 182,783.82 = 78,711.76 : x
  2. Step 2: Convert to fraction form
    132,409.36/182,783.82 = 78,711.76/x
  3. Step 3: Cross multiply
    132,409.36x = 182,783.82 × 78,711.76
  4. Step 4: Simplify right side
    132,409.36x = 14,387,236,171.72
  5. Step 5: Solve for x
    x = 14,387,236,171.72/132,409.36
  6. Step 6: Final answer
    x = 108,657.24

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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.