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Finding the Fourth Proportional to 135,957.20, 203,939.84 and 64,887.32

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Solution

The fourth proportional to 135,957.20, 203,939.84 and 64,887.32 is: 97,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,957.20 : 203,939.84 = 64,887.32 : x
  2. Step 2: Convert to fraction form
    135,957.20/203,939.84 = 64,887.32/x
  3. Step 3: Cross multiply
    135,957.20x = 203,939.84 × 64,887.32
  4. Step 4: Simplify right side
    135,957.20x = 13,233,109,658.83
  5. Step 5: Solve for x
    x = 13,233,109,658.83/135,957.20
  6. Step 6: Final answer
    x = 97,332.91

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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.