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Finding the Fourth Proportional to 133,418.55, 200,128.16 and 49,142.23

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Solution

The fourth proportional to 133,418.55, 200,128.16 and 49,142.23 is: 73,713.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,418.55 : 200,128.16 = 49,142.23 : x
  2. Step 2: Convert to fraction form
    133,418.55/200,128.16 = 49,142.23/x
  3. Step 3: Cross multiply
    133,418.55x = 200,128.16 × 49,142.23
  4. Step 4: Simplify right side
    133,418.55x = 9,834,744,068.20
  5. Step 5: Solve for x
    x = 9,834,744,068.20/133,418.55
  6. Step 6: Final answer
    x = 73,713.47

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1.5x scale

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.