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Finding the Fourth Proportional to 133,082.53, 183,656.67 and 72,655.72

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Solution

The fourth proportional to 133,082.53, 183,656.67 and 72,655.72 is: 100,266.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,082.53 : 183,656.67 = 72,655.72 : x
  2. Step 2: Convert to fraction form
    133,082.53/183,656.67 = 72,655.72/x
  3. Step 3: Cross multiply
    133,082.53x = 183,656.67 × 72,655.72
  4. Step 4: Simplify right side
    133,082.53x = 13,343,707,591.65
  5. Step 5: Solve for x
    x = 13,343,707,591.65/133,082.53
  6. Step 6: Final answer
    x = 100,266.41

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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.