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Finding the Fourth Proportional to 133,228.45, 183,849.78 and 72,801.15

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Solution

The fourth proportional to 133,228.45, 183,849.78 and 72,801.15 is: 100,462.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,228.45 : 183,849.78 = 72,801.15 : x
  2. Step 2: Convert to fraction form
    133,228.45/183,849.78 = 72,801.15/x
  3. Step 3: Cross multiply
    133,228.45x = 183,849.78 × 72,801.15
  4. Step 4: Simplify right side
    133,228.45x = 13,384,475,411.25
  5. Step 5: Solve for x
    x = 13,384,475,411.25/133,228.45
  6. Step 6: Final answer
    x = 100,462.59

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1.5x scale

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.