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Finding the Fourth Proportional to 132,639.64, 182,984.58 and 87,259.24

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Solution

The fourth proportional to 132,639.64, 182,984.58 and 87,259.24 is: 120,379.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,639.64 : 182,984.58 = 87,259.24 : x
  2. Step 2: Convert to fraction form
    132,639.64/182,984.58 = 87,259.24/x
  3. Step 3: Cross multiply
    132,639.64x = 182,984.58 × 87,259.24
  4. Step 4: Simplify right side
    132,639.64x = 15,967,095,382.52
  5. Step 5: Solve for x
    x = 15,967,095,382.52/132,639.64
  6. Step 6: Final answer
    x = 120,379.51

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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.