Home / 119,787.78-165,306.26-66,071.58

Finding the Fourth Proportional to 119,787.78, 165,306.26 and 66,071.58

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Solution

The fourth proportional to 119,787.78, 165,306.26 and 66,071.58 is: 91,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,787.78 : 165,306.26 = 66,071.58 : x
  2. Step 2: Convert to fraction form
    119,787.78/165,306.26 = 66,071.58/x
  3. Step 3: Cross multiply
    119,787.78x = 165,306.26 × 66,071.58
  4. Step 4: Simplify right side
    119,787.78x = 10,922,045,782.09
  5. Step 5: Solve for x
    x = 10,922,045,782.09/119,787.78
  6. Step 6: Final answer
    x = 91,178.30

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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.