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Finding the Fourth Proportional to 132,479.66, 199,120.95 and 87,653.91

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Solution

The fourth proportional to 132,479.66, 199,120.95 and 87,653.91 is: 131,746.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,479.66 : 199,120.95 = 87,653.91 : x
  2. Step 2: Convert to fraction form
    132,479.66/199,120.95 = 87,653.91/x
  3. Step 3: Cross multiply
    132,479.66x = 199,120.95 × 87,653.91
  4. Step 4: Simplify right side
    132,479.66x = 17,453,729,830.41
  5. Step 5: Solve for x
    x = 17,453,729,830.41/132,479.66
  6. Step 6: Final answer
    x = 131,746.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.