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Finding the Fourth Proportional to 111,777.27, 154,239.69 and 64,027.77

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Solution

The fourth proportional to 111,777.27, 154,239.69 and 64,027.77 is: 88,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,777.27 : 154,239.69 = 64,027.77 : x
  2. Step 2: Convert to fraction form
    111,777.27/154,239.69 = 64,027.77/x
  3. Step 3: Cross multiply
    111,777.27x = 154,239.69 × 64,027.77
  4. Step 4: Simplify right side
    111,777.27x = 9,875,623,396.19
  5. Step 5: Solve for x
    x = 9,875,623,396.19/111,777.27
  6. Step 6: Final answer
    x = 88,350.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.