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Finding the Fourth Proportional to 159,483.81, 220,087.15 and 87,863.21

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Solution

The fourth proportional to 159,483.81, 220,087.15 and 87,863.21 is: 121,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,483.81 : 220,087.15 = 87,863.21 : x
  2. Step 2: Convert to fraction form
    159,483.81/220,087.15 = 87,863.21/x
  3. Step 3: Cross multiply
    159,483.81x = 220,087.15 × 87,863.21
  4. Step 4: Simplify right side
    159,483.81x = 19,337,563,478.75
  5. Step 5: Solve for x
    x = 19,337,563,478.75/159,483.81
  6. Step 6: Final answer
    x = 121,250.95

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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.