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Finding the Fourth Proportional to 146,765.80, 220,148.70 and 121,855.60

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Solution

The fourth proportional to 146,765.80, 220,148.70 and 121,855.60 is: 182,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,765.80 : 220,148.70 = 121,855.60 : x
  2. Step 2: Convert to fraction form
    146,765.80/220,148.70 = 121,855.60/x
  3. Step 3: Cross multiply
    146,765.80x = 220,148.70 × 121,855.60
  4. Step 4: Simplify right side
    146,765.80x = 26,826,351,927.72
  5. Step 5: Solve for x
    x = 26,826,351,927.72/146,765.80
  6. Step 6: Final answer
    x = 182,783.40

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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.