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Finding the Fourth Proportional to 99,882.36, 137,772.36 and 64,015.56

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Solution

The fourth proportional to 99,882.36, 137,772.36 and 64,015.56 is: 88,299.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,882.36 : 137,772.36 = 64,015.56 : x
  2. Step 2: Convert to fraction form
    99,882.36/137,772.36 = 64,015.56/x
  3. Step 3: Cross multiply
    99,882.36x = 137,772.36 × 64,015.56
  4. Step 4: Simplify right side
    99,882.36x = 8,819,574,777.92
  5. Step 5: Solve for x
    x = 8,819,574,777.92/99,882.36
  6. Step 6: Final answer
    x = 88,299.62

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1.5x scale

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.