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Finding the Fourth Proportional to 134,778.40, 202,313.40 and 84,914.80

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Solution

The fourth proportional to 134,778.40, 202,313.40 and 84,914.80 is: 127,464.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,778.40 : 202,313.40 = 84,914.80 : x
  2. Step 2: Convert to fraction form
    134,778.40/202,313.40 = 84,914.80/x
  3. Step 3: Cross multiply
    134,778.40x = 202,313.40 × 84,914.80
  4. Step 4: Simplify right side
    134,778.40x = 17,179,401,898.32
  5. Step 5: Solve for x
    x = 17,179,401,898.32/134,778.40
  6. Step 6: Final answer
    x = 127,464.06

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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.