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Finding the Fourth Proportional to 207,702.99, 311,421.42 and 87,727.41

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Solution

The fourth proportional to 207,702.99, 311,421.42 and 87,727.41 is: 131,534.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,702.99 : 311,421.42 = 87,727.41 : x
  2. Step 2: Convert to fraction form
    207,702.99/311,421.42 = 87,727.41/x
  3. Step 3: Cross multiply
    207,702.99x = 311,421.42 × 87,727.41
  4. Step 4: Simplify right side
    207,702.99x = 27,320,194,595.12
  5. Step 5: Solve for x
    x = 27,320,194,595.12/207,702.99
  6. Step 6: Final answer
    x = 131,534.91

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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.