Home / 99,989.28-137,895.72-82,966.44

Finding the Fourth Proportional to 99,989.28, 137,895.72 and 82,966.44

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Solution

The fourth proportional to 99,989.28, 137,895.72 and 82,966.44 is: 114,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,989.28 : 137,895.72 = 82,966.44 : x
  2. Step 2: Convert to fraction form
    99,989.28/137,895.72 = 82,966.44/x
  3. Step 3: Cross multiply
    99,989.28x = 137,895.72 × 82,966.44
  4. Step 4: Simplify right side
    99,989.28x = 11,440,716,979.64
  5. Step 5: Solve for x
    x = 11,440,716,979.64/99,989.28
  6. Step 6: Final answer
    x = 114,419.44

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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.