Home / 151,640.02-209,195.56-87,940.90

Finding the Fourth Proportional to 151,640.02, 209,195.56 and 87,940.90

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Solution

The fourth proportional to 151,640.02, 209,195.56 and 87,940.90 is: 121,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,640.02 : 209,195.56 = 87,940.90 : x
  2. Step 2: Convert to fraction form
    151,640.02/209,195.56 = 87,940.90/x
  3. Step 3: Cross multiply
    151,640.02x = 209,195.56 × 87,940.90
  4. Step 4: Simplify right side
    151,640.02x = 18,396,845,822.40
  5. Step 5: Solve for x
    x = 18,396,845,822.40/151,640.02
  6. Step 6: Final answer
    x = 121,319.20

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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.