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Finding the Fourth Proportional to 133,228.58, 183,849.95 and 72,801.29

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Solution

The fourth proportional to 133,228.58, 183,849.95 and 72,801.29 is: 100,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,228.58 : 183,849.95 = 72,801.29 : x
  2. Step 2: Convert to fraction form
    133,228.58/183,849.95 = 72,801.29/x
  3. Step 3: Cross multiply
    133,228.58x = 183,849.95 × 72,801.29
  4. Step 4: Simplify right side
    133,228.58x = 13,384,514,168.06
  5. Step 5: Solve for x
    x = 13,384,514,168.06/133,228.58
  6. Step 6: Final answer
    x = 100,462.79

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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.