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Finding the Fourth Proportional to 159,480.28, 220,074.90 and 87,858.40

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Solution

The fourth proportional to 159,480.28, 220,074.90 and 87,858.40 is: 121,240.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,480.28 : 220,074.90 = 87,858.40 : x
  2. Step 2: Convert to fraction form
    159,480.28/220,074.90 = 87,858.40/x
  3. Step 3: Cross multiply
    159,480.28x = 220,074.90 × 87,858.40
  4. Step 4: Simplify right side
    159,480.28x = 19,335,428,594.16
  5. Step 5: Solve for x
    x = 19,335,428,594.16/159,480.28
  6. Step 6: Final answer
    x = 121,240.25

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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.