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Finding the Fourth Proportional to 146,776.60, 220,164.90 and 76,639.60

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Solution

The fourth proportional to 146,776.60, 220,164.90 and 76,639.60 is: 114,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,776.60 : 220,164.90 = 76,639.60 : x
  2. Step 2: Convert to fraction form
    146,776.60/220,164.90 = 76,639.60/x
  3. Step 3: Cross multiply
    146,776.60x = 220,164.90 × 76,639.60
  4. Step 4: Simplify right side
    146,776.60x = 16,873,349,870.04
  5. Step 5: Solve for x
    x = 16,873,349,870.04/146,776.60
  6. Step 6: Final answer
    x = 114,959.40

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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.