Home / 102,921.40-154,382.10-43,742.20

Finding the Fourth Proportional to 102,921.40, 154,382.10 and 43,742.20

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Solution

The fourth proportional to 102,921.40, 154,382.10 and 43,742.20 is: 65,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921.40 : 154,382.10 = 43,742.20 : x
  2. Step 2: Convert to fraction form
    102,921.40/154,382.10 = 43,742.20/x
  3. Step 3: Cross multiply
    102,921.40x = 154,382.10 × 43,742.20
  4. Step 4: Simplify right side
    102,921.40x = 6,753,012,694.62
  5. Step 5: Solve for x
    x = 6,753,012,694.62/102,921.40
  6. Step 6: Final answer
    x = 65,613.30

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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.