Home / 143,507.70-198,313.72-107,635.43

Finding the Fourth Proportional to 143,507.70, 198,313.72 and 107,635.43

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Solution

The fourth proportional to 143,507.70, 198,313.72 and 107,635.43 is: 148,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,507.70 : 198,313.72 = 107,635.43 : x
  2. Step 2: Convert to fraction form
    143,507.70/198,313.72 = 107,635.43/x
  3. Step 3: Cross multiply
    143,507.70x = 198,313.72 × 107,635.43
  4. Step 4: Simplify right side
    143,507.70x = 21,345,582,753.80
  5. Step 5: Solve for x
    x = 21,345,582,753.80/143,507.70
  6. Step 6: Final answer
    x = 148,741.72

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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.