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Finding the Fourth Proportional to 133,818.71, 200,728.40 and 45,134.51

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Solution

The fourth proportional to 133,818.71, 200,728.40 and 45,134.51 is: 67,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,818.71 : 200,728.40 = 45,134.51 : x
  2. Step 2: Convert to fraction form
    133,818.71/200,728.40 = 45,134.51/x
  3. Step 3: Cross multiply
    133,818.71x = 200,728.40 × 45,134.51
  4. Step 4: Simplify right side
    133,818.71x = 9,059,776,747.77
  5. Step 5: Solve for x
    x = 9,059,776,747.77/133,818.71
  6. Step 6: Final answer
    x = 67,701.87

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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.