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Finding the Fourth Proportional to 134,814.40, 202,221.60 and 87,812.80

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Solution

The fourth proportional to 134,814.40, 202,221.60 and 87,812.80 is: 131,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,814.40 : 202,221.60 = 87,812.80 : x
  2. Step 2: Convert to fraction form
    134,814.40/202,221.60 = 87,812.80/x
  3. Step 3: Cross multiply
    134,814.40x = 202,221.60 × 87,812.80
  4. Step 4: Simplify right side
    134,814.40x = 17,757,644,916.48
  5. Step 5: Solve for x
    x = 17,757,644,916.48/134,814.40
  6. Step 6: Final answer
    x = 131,719.20

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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.