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Finding the Fourth Proportional to 99,956.87, 137,927.16 and 64,195.32

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Solution

The fourth proportional to 99,956.87, 137,927.16 and 64,195.32 is: 88,580.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,956.87 : 137,927.16 = 64,195.32 : x
  2. Step 2: Convert to fraction form
    99,956.87/137,927.16 = 64,195.32/x
  3. Step 3: Cross multiply
    99,956.87x = 137,927.16 × 64,195.32
  4. Step 4: Simplify right side
    99,956.87x = 8,854,278,172.89
  5. Step 5: Solve for x
    x = 8,854,278,172.89/99,956.87
  6. Step 6: Final answer
    x = 88,580.99

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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.