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Finding the Fourth Proportional to 201,497.61, 302,181.12 and 66,531.36

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Solution

The fourth proportional to 201,497.61, 302,181.12 and 66,531.36 is: 99,775.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,497.61 : 302,181.12 = 66,531.36 : x
  2. Step 2: Convert to fraction form
    201,497.61/302,181.12 = 66,531.36/x
  3. Step 3: Cross multiply
    201,497.61x = 302,181.12 × 66,531.36
  4. Step 4: Simplify right side
    201,497.61x = 20,104,520,879.92
  5. Step 5: Solve for x
    x = 20,104,520,879.92/201,497.61
  6. Step 6: Final answer
    x = 99,775.48

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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.