Home / 159,905-220,463.78-131,118.60

Finding the Fourth Proportional to 159,905, 220,463.78 and 131,118.60

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Solution

The fourth proportional to 159,905, 220,463.78 and 131,118.60 is: 180,775.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,905 : 220,463.78 = 131,118.60 : x
  2. Step 2: Convert to fraction form
    159,905/220,463.78 = 131,118.60/x
  3. Step 3: Cross multiply
    159,905x = 220,463.78 × 131,118.60
  4. Step 4: Simplify right side
    159,905x = 28,906,902,184.31
  5. Step 5: Solve for x
    x = 28,906,902,184.31/159,905
  6. Step 6: Final answer
    x = 180,775.47

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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.