Home / 188,220.15-282,081.02-138,065.45

Finding the Fourth Proportional to 188,220.15, 282,081.02 and 138,065.45

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Solution

The fourth proportional to 188,220.15, 282,081.02 and 138,065.45 is: 206,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,220.15 : 282,081.02 = 138,065.45 : x
  2. Step 2: Convert to fraction form
    188,220.15/282,081.02 = 138,065.45/x
  3. Step 3: Cross multiply
    188,220.15x = 282,081.02 × 138,065.45
  4. Step 4: Simplify right side
    188,220.15x = 38,945,640,862.03
  5. Step 5: Solve for x
    x = 38,945,640,862.03/188,220.15
  6. Step 6: Final answer
    x = 206,915.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.