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Finding the Fourth Proportional to 159,535.50, 220,160.44 and 87,918.09

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Solution

The fourth proportional to 159,535.50, 220,160.44 and 87,918.09 is: 121,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,535.50 : 220,160.44 = 87,918.09 : x
  2. Step 2: Convert to fraction form
    159,535.50/220,160.44 = 87,918.09/x
  3. Step 3: Cross multiply
    159,535.50x = 220,160.44 × 87,918.09
  4. Step 4: Simplify right side
    159,535.50x = 19,356,085,378.36
  5. Step 5: Solve for x
    x = 19,356,085,378.36/159,535.50
  6. Step 6: Final answer
    x = 121,327.76

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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.