Home / 132,640.64-182,985.96-87,260.24

Finding the Fourth Proportional to 132,640.64, 182,985.96 and 87,260.24

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Solution

The fourth proportional to 132,640.64, 182,985.96 and 87,260.24 is: 120,380.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,640.64 : 182,985.96 = 87,260.24 : x
  2. Step 2: Convert to fraction form
    132,640.64/182,985.96 = 87,260.24/x
  3. Step 3: Cross multiply
    132,640.64x = 182,985.96 × 87,260.24
  4. Step 4: Simplify right side
    132,640.64x = 15,967,398,786.23
  5. Step 5: Solve for x
    x = 15,967,398,786.23/132,640.64
  6. Step 6: Final answer
    x = 120,380.89

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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.