Home / 132,981.66-198,693.72-128,330.64

Finding the Fourth Proportional to 132,981.66, 198,693.72 and 128,330.64

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Solution

The fourth proportional to 132,981.66, 198,693.72 and 128,330.64 is: 191,744.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,981.66 : 198,693.72 = 128,330.64 : x
  2. Step 2: Convert to fraction form
    132,981.66/198,693.72 = 128,330.64/x
  3. Step 3: Cross multiply
    132,981.66x = 198,693.72 × 128,330.64
  4. Step 4: Simplify right side
    132,981.66x = 25,498,492,251.58
  5. Step 5: Solve for x
    x = 25,498,492,251.58/132,981.66
  6. Step 6: Final answer
    x = 191,744.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.