Home / 119,787.32-165,305.81-66,072.21

Finding the Fourth Proportional to 119,787.32, 165,305.81 and 66,072.21

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Solution

The fourth proportional to 119,787.32, 165,305.81 and 66,072.21 is: 91,179.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,787.32 : 165,305.81 = 66,072.21 : x
  2. Step 2: Convert to fraction form
    119,787.32/165,305.81 = 66,072.21/x
  3. Step 3: Cross multiply
    119,787.32x = 165,305.81 × 66,072.21
  4. Step 4: Simplify right side
    119,787.32x = 10,922,119,862.18
  5. Step 5: Solve for x
    x = 10,922,119,862.18/119,787.32
  6. Step 6: Final answer
    x = 91,179.27

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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.