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Finding the Fourth Proportional to 133,143.36, 183,739.08 and 75,779.87

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Solution

The fourth proportional to 133,143.36, 183,739.08 and 75,779.87 is: 104,576.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,143.36 : 183,739.08 = 75,779.87 : x
  2. Step 2: Convert to fraction form
    133,143.36/183,739.08 = 75,779.87/x
  3. Step 3: Cross multiply
    133,143.36x = 183,739.08 × 75,779.87
  4. Step 4: Simplify right side
    133,143.36x = 13,923,722,677.62
  5. Step 5: Solve for x
    x = 13,923,722,677.62/133,143.36
  6. Step 6: Final answer
    x = 104,576.92

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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.