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Finding the Fourth Proportional to 133,073.40, 183,641.76 and 72,645.39

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Solution

The fourth proportional to 133,073.40, 183,641.76 and 72,645.39 is: 100,250.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,073.40 : 183,641.76 = 72,645.39 : x
  2. Step 2: Convert to fraction form
    133,073.40/183,641.76 = 72,645.39/x
  3. Step 3: Cross multiply
    133,073.40x = 183,641.76 × 72,645.39
  4. Step 4: Simplify right side
    133,073.40x = 13,340,727,275.49
  5. Step 5: Solve for x
    x = 13,340,727,275.49/133,073.40
  6. Step 6: Final answer
    x = 100,250.89

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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.