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Finding the Fourth Proportional to 201,147.80, 301,721.70 and 60,913.40

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Solution

The fourth proportional to 201,147.80, 301,721.70 and 60,913.40 is: 91,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,147.80 : 301,721.70 = 60,913.40 : x
  2. Step 2: Convert to fraction form
    201,147.80/301,721.70 = 60,913.40/x
  3. Step 3: Cross multiply
    201,147.80x = 301,721.70 × 60,913.40
  4. Step 4: Simplify right side
    201,147.80x = 18,378,894,600.78
  5. Step 5: Solve for x
    x = 18,378,894,600.78/201,147.80
  6. Step 6: Final answer
    x = 91,370.10

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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.