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Finding the Fourth Proportional to 135,963.40, 203,864.10 and 83,410.60

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Solution

The fourth proportional to 135,963.40, 203,864.10 and 83,410.60 is: 125,066.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,963.40 : 203,864.10 = 83,410.60 : x
  2. Step 2: Convert to fraction form
    135,963.40/203,864.10 = 83,410.60/x
  3. Step 3: Cross multiply
    135,963.40x = 203,864.10 × 83,410.60
  4. Step 4: Simplify right side
    135,963.40x = 17,004,426,899.46
  5. Step 5: Solve for x
    x = 17,004,426,899.46/135,963.40
  6. Step 6: Final answer
    x = 125,066.21

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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.