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Finding the Fourth Proportional to 159,578.94, 220,228.76 and 87,958.78

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Solution

The fourth proportional to 159,578.94, 220,228.76 and 87,958.78 is: 121,388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,578.94 : 220,228.76 = 87,958.78 : x
  2. Step 2: Convert to fraction form
    159,578.94/220,228.76 = 87,958.78/x
  3. Step 3: Cross multiply
    159,578.94x = 220,228.76 × 87,958.78
  4. Step 4: Simplify right side
    159,578.94x = 19,371,053,050.51
  5. Step 5: Solve for x
    x = 19,371,053,050.51/159,578.94
  6. Step 6: Final answer
    x = 121,388.53

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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.