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Finding the Fourth Proportional to 159,555.96, 220,178.25 and 87,935.76

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Solution

The fourth proportional to 159,555.96, 220,178.25 and 87,935.76 is: 121,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,555.96 : 220,178.25 = 87,935.76 : x
  2. Step 2: Convert to fraction form
    159,555.96/220,178.25 = 87,935.76/x
  3. Step 3: Cross multiply
    159,555.96x = 220,178.25 × 87,935.76
  4. Step 4: Simplify right side
    159,555.96x = 19,361,541,749.22
  5. Step 5: Solve for x
    x = 19,361,541,749.22/159,555.96
  6. Step 6: Final answer
    x = 121,346.40

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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.