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Finding the Fourth Proportional to 146,787.60, 220,181.40 and 75,928.80

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Solution

The fourth proportional to 146,787.60, 220,181.40 and 75,928.80 is: 113,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,787.60 : 220,181.40 = 75,928.80 : x
  2. Step 2: Convert to fraction form
    146,787.60/220,181.40 = 75,928.80/x
  3. Step 3: Cross multiply
    146,787.60x = 220,181.40 × 75,928.80
  4. Step 4: Simplify right side
    146,787.60x = 16,718,109,484.32
  5. Step 5: Solve for x
    x = 16,718,109,484.32/146,787.60
  6. Step 6: Final answer
    x = 113,893.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.