Home / 123,976.40-185,964.60-76,629.20

Finding the Fourth Proportional to 123,976.40, 185,964.60 and 76,629.20

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Solution

The fourth proportional to 123,976.40, 185,964.60 and 76,629.20 is: 114,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,976.40 : 185,964.60 = 76,629.20 : x
  2. Step 2: Convert to fraction form
    123,976.40/185,964.60 = 76,629.20/x
  3. Step 3: Cross multiply
    123,976.40x = 185,964.60 × 76,629.20
  4. Step 4: Simplify right side
    123,976.40x = 14,250,318,526.32
  5. Step 5: Solve for x
    x = 14,250,318,526.32/123,976.40
  6. Step 6: Final answer
    x = 114,943.80

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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.