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Finding the Fourth Proportional to 159,563.51, 220,198.99 and 87,943.72

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Solution

The fourth proportional to 159,563.51, 220,198.99 and 87,943.72 is: 121,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,563.51 : 220,198.99 = 87,943.72 : x
  2. Step 2: Convert to fraction form
    159,563.51/220,198.99 = 87,943.72/x
  3. Step 3: Cross multiply
    159,563.51x = 220,198.99 × 87,943.72
  4. Step 4: Simplify right side
    159,563.51x = 19,365,117,550.49
  5. Step 5: Solve for x
    x = 19,365,117,550.49/159,563.51
  6. Step 6: Final answer
    x = 121,363.07

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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.