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Finding the Fourth Proportional to 146,776.80, 220,165.20 and 121,866.60

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Solution

The fourth proportional to 146,776.80, 220,165.20 and 121,866.60 is: 182,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,776.80 : 220,165.20 = 121,866.60 : x
  2. Step 2: Convert to fraction form
    146,776.80/220,165.20 = 121,866.60/x
  3. Step 3: Cross multiply
    146,776.80x = 220,165.20 × 121,866.60
  4. Step 4: Simplify right side
    146,776.80x = 26,830,784,362.32
  5. Step 5: Solve for x
    x = 26,830,784,362.32/146,776.80
  6. Step 6: Final answer
    x = 182,799.90

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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.