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Finding the Fourth Proportional to 99,405.39, 137,177.93 and 54,082.34

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Solution

The fourth proportional to 99,405.39, 137,177.93 and 54,082.34 is: 74,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,405.39 : 137,177.93 = 54,082.34 : x
  2. Step 2: Convert to fraction form
    99,405.39/137,177.93 = 54,082.34/x
  3. Step 3: Cross multiply
    99,405.39x = 137,177.93 × 54,082.34
  4. Step 4: Simplify right side
    99,405.39x = 7,418,903,450.76
  5. Step 5: Solve for x
    x = 7,418,903,450.76/99,405.39
  6. Step 6: Final answer
    x = 74,632.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.