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Finding the Fourth Proportional to 133,053.68, 183,609.52 and 79,311

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Solution

The fourth proportional to 133,053.68, 183,609.52 and 79,311 is: 109,446.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,053.68 : 183,609.52 = 79,311 : x
  2. Step 2: Convert to fraction form
    133,053.68/183,609.52 = 79,311/x
  3. Step 3: Cross multiply
    133,053.68x = 183,609.52 × 79,311
  4. Step 4: Simplify right side
    133,053.68x = 14,562,254,640.72
  5. Step 5: Solve for x
    x = 14,562,254,640.72/133,053.68
  6. Step 6: Final answer
    x = 109,446.46

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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.