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Finding the Fourth Proportional to 159,504.93, 220,113.95 and 87,891.57

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Solution

The fourth proportional to 159,504.93, 220,113.95 and 87,891.57 is: 121,288.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,504.93 : 220,113.95 = 87,891.57 : x
  2. Step 2: Convert to fraction form
    159,504.93/220,113.95 = 87,891.57/x
  3. Step 3: Cross multiply
    159,504.93x = 220,113.95 × 87,891.57
  4. Step 4: Simplify right side
    159,504.93x = 19,346,160,204.94
  5. Step 5: Solve for x
    x = 19,346,160,204.94/159,504.93
  6. Step 6: Final answer
    x = 121,288.79

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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.