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Finding the Fourth Proportional to 133,012.62, 183,551.68 and 72,581.76

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Solution

The fourth proportional to 133,012.62, 183,551.68 and 72,581.76 is: 100,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,012.62 : 183,551.68 = 72,581.76 : x
  2. Step 2: Convert to fraction form
    133,012.62/183,551.68 = 72,581.76/x
  3. Step 3: Cross multiply
    133,012.62x = 183,551.68 × 72,581.76
  4. Step 4: Simplify right side
    133,012.62x = 13,322,503,985.36
  5. Step 5: Solve for x
    x = 13,322,503,985.36/133,012.62
  6. Step 6: Final answer
    x = 100,159.70

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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.