Home / 149,946.72-206,920.36-86,286.80

Finding the Fourth Proportional to 149,946.72, 206,920.36 and 86,286.80

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Solution

The fourth proportional to 149,946.72, 206,920.36 and 86,286.80 is: 119,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,946.72 : 206,920.36 = 86,286.80 : x
  2. Step 2: Convert to fraction form
    149,946.72/206,920.36 = 86,286.80/x
  3. Step 3: Cross multiply
    149,946.72x = 206,920.36 × 86,286.80
  4. Step 4: Simplify right side
    149,946.72x = 17,854,495,719.25
  5. Step 5: Solve for x
    x = 17,854,495,719.25/149,946.72
  6. Step 6: Final answer
    x = 119,072.27

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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.