Home / 119,916.78-165,480.80-66,200.64

Finding the Fourth Proportional to 119,916.78, 165,480.80 and 66,200.64

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Solution

The fourth proportional to 119,916.78, 165,480.80 and 66,200.64 is: 91,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,916.78 : 165,480.80 = 66,200.64 : x
  2. Step 2: Convert to fraction form
    119,916.78/165,480.80 = 66,200.64/x
  3. Step 3: Cross multiply
    119,916.78x = 165,480.80 × 66,200.64
  4. Step 4: Simplify right side
    119,916.78x = 10,954,934,867.71
  5. Step 5: Solve for x
    x = 10,954,934,867.71/119,916.78
  6. Step 6: Final answer
    x = 91,354.48

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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.