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Finding the Fourth Proportional to 133,122, 183,708.68 and 72,692.76

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Solution

The fourth proportional to 133,122, 183,708.68 and 72,692.76 is: 100,316.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,122 : 183,708.68 = 72,692.76 : x
  2. Step 2: Convert to fraction form
    133,122/183,708.68 = 72,692.76/x
  3. Step 3: Cross multiply
    133,122x = 183,708.68 × 72,692.76
  4. Step 4: Simplify right side
    133,122x = 13,354,290,621.69
  5. Step 5: Solve for x
    x = 13,354,290,621.69/133,122
  6. Step 6: Final answer
    x = 100,316.18

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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.