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Finding the Fourth Proportional to 133,042.97, 183,603.28 and 72,617.57

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Solution

The fourth proportional to 133,042.97, 183,603.28 and 72,617.57 is: 100,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,042.97 : 183,603.28 = 72,617.57 : x
  2. Step 2: Convert to fraction form
    133,042.97/183,603.28 = 72,617.57/x
  3. Step 3: Cross multiply
    133,042.97x = 183,603.28 × 72,617.57
  4. Step 4: Simplify right side
    133,042.97x = 13,332,824,037.63
  5. Step 5: Solve for x
    x = 13,332,824,037.63/133,042.97
  6. Step 6: Final answer
    x = 100,214.42

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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.