Home / 132,728.60-183,203.10-87,439.64

Finding the Fourth Proportional to 132,728.60, 183,203.10 and 87,439.64

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Solution

The fourth proportional to 132,728.60, 183,203.10 and 87,439.64 is: 120,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,728.60 : 183,203.10 = 87,439.64 : x
  2. Step 2: Convert to fraction form
    132,728.60/183,203.10 = 87,439.64/x
  3. Step 3: Cross multiply
    132,728.60x = 183,203.10 × 87,439.64
  4. Step 4: Simplify right side
    132,728.60x = 16,019,213,110.88
  5. Step 5: Solve for x
    x = 16,019,213,110.88/132,728.60
  6. Step 6: Final answer
    x = 120,691.49

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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.