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Finding the Fourth Proportional to 99,250.50, 136,965.70 and 54,538.50

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Solution

The fourth proportional to 99,250.50, 136,965.70 and 54,538.50 is: 75,263.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,250.50 : 136,965.70 = 54,538.50 : x
  2. Step 2: Convert to fraction form
    99,250.50/136,965.70 = 54,538.50/x
  3. Step 3: Cross multiply
    99,250.50x = 136,965.70 × 54,538.50
  4. Step 4: Simplify right side
    99,250.50x = 7,469,903,829.45
  5. Step 5: Solve for x
    x = 7,469,903,829.45/99,250.50
  6. Step 6: Final answer
    x = 75,263.14

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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.