Home / 99,974.04-137,964.09-54,652.20

Finding the Fourth Proportional to 99,974.04, 137,964.09 and 54,652.20

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Solution

The fourth proportional to 99,974.04, 137,964.09 and 54,652.20 is: 75,419.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,974.04 : 137,964.09 = 54,652.20 : x
  2. Step 2: Convert to fraction form
    99,974.04/137,964.09 = 54,652.20/x
  3. Step 3: Cross multiply
    99,974.04x = 137,964.09 × 54,652.20
  4. Step 4: Simplify right side
    99,974.04x = 7,540,041,039.50
  5. Step 5: Solve for x
    x = 7,540,041,039.50/99,974.04
  6. Step 6: Final answer
    x = 75,419.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.