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Finding the Fourth Proportional to 159,558.90, 220,190.13 and 87,938.97

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Solution

The fourth proportional to 159,558.90, 220,190.13 and 87,938.97 is: 121,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,558.90 : 220,190.13 = 87,938.97 : x
  2. Step 2: Convert to fraction form
    159,558.90/220,190.13 = 87,938.97/x
  3. Step 3: Cross multiply
    159,558.90x = 220,190.13 × 87,938.97
  4. Step 4: Simplify right side
    159,558.90x = 19,363,293,236.37
  5. Step 5: Solve for x
    x = 19,363,293,236.37/159,558.90
  6. Step 6: Final answer
    x = 121,355.14

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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.