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Finding the Fourth Proportional to 201,110.60, 301,665.90 and 76,435.40

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Solution

The fourth proportional to 201,110.60, 301,665.90 and 76,435.40 is: 114,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,110.60 : 301,665.90 = 76,435.40 : x
  2. Step 2: Convert to fraction form
    201,110.60/301,665.90 = 76,435.40/x
  3. Step 3: Cross multiply
    201,110.60x = 301,665.90 × 76,435.40
  4. Step 4: Simplify right side
    201,110.60x = 23,057,953,732.86
  5. Step 5: Solve for x
    x = 23,057,953,732.86/201,110.60
  6. Step 6: Final answer
    x = 114,653.10

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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.