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Finding the Fourth Proportional to 151,643.52, 209,200.39 and 87,944.40

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Solution

The fourth proportional to 151,643.52, 209,200.39 and 87,944.40 is: 121,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,643.52 : 209,200.39 = 87,944.40 : x
  2. Step 2: Convert to fraction form
    151,643.52/209,200.39 = 87,944.40/x
  3. Step 3: Cross multiply
    151,643.52x = 209,200.39 × 87,944.40
  4. Step 4: Simplify right side
    151,643.52x = 18,398,002,778.32
  5. Step 5: Solve for x
    x = 18,398,002,778.32/151,643.52
  6. Step 6: Final answer
    x = 121,324.03

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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.