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Finding the Fourth Proportional to 189,405.00, 261,384.42 and 103,369.53

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Solution

The fourth proportional to 189,405.00, 261,384.42 and 103,369.53 is: 142,652.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,405.00 : 261,384.42 = 103,369.53 : x
  2. Step 2: Convert to fraction form
    189,405.00/261,384.42 = 103,369.53/x
  3. Step 3: Cross multiply
    189,405.00x = 261,384.42 × 103,369.53
  4. Step 4: Simplify right side
    189,405.00x = 27,019,184,127.88
  5. Step 5: Solve for x
    x = 27,019,184,127.88/189,405.00
  6. Step 6: Final answer
    x = 142,652.97

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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.