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Finding the Fourth Proportional to 93,899.88, 141,103.26 and 87,921

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Solution

The fourth proportional to 93,899.88, 141,103.26 and 87,921 is: 132,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,899.88 : 141,103.26 = 87,921 : x
  2. Step 2: Convert to fraction form
    93,899.88/141,103.26 = 87,921/x
  3. Step 3: Cross multiply
    93,899.88x = 141,103.26 × 87,921
  4. Step 4: Simplify right side
    93,899.88x = 12,405,939,722.46
  5. Step 5: Solve for x
    x = 12,405,939,722.46/93,899.88
  6. Step 6: Final answer
    x = 132,118.80

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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.