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Finding the Fourth Proportional to 159,480.81, 220,083.01 and 87,860.21

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Solution

The fourth proportional to 159,480.81, 220,083.01 and 87,860.21 is: 121,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,480.81 : 220,083.01 = 87,860.21 : x
  2. Step 2: Convert to fraction form
    159,480.81/220,083.01 = 87,860.21/x
  3. Step 3: Cross multiply
    159,480.81x = 220,083.01 × 87,860.21
  4. Step 4: Simplify right side
    159,480.81x = 19,336,538,155.97
  5. Step 5: Solve for x
    x = 19,336,538,155.97/159,480.81
  6. Step 6: Final answer
    x = 121,246.80

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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.