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Finding the Fourth Proportional to 99,137.94, 136,812.85 and 53,815.94

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Solution

The fourth proportional to 99,137.94, 136,812.85 and 53,815.94 is: 74,267.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,137.94 : 136,812.85 = 53,815.94 : x
  2. Step 2: Convert to fraction form
    99,137.94/136,812.85 = 53,815.94/x
  3. Step 3: Cross multiply
    99,137.94x = 136,812.85 × 53,815.94
  4. Step 4: Simplify right side
    99,137.94x = 7,362,711,436.49
  5. Step 5: Solve for x
    x = 7,362,711,436.49/99,137.94
  6. Step 6: Final answer
    x = 74,267.34

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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.