Home / 197,123.12-272,029.92-107,699.12

Finding the Fourth Proportional to 197,123.12, 272,029.92 and 107,699.12

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Solution

The fourth proportional to 197,123.12, 272,029.92 and 107,699.12 is: 148,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,123.12 : 272,029.92 = 107,699.12 : x
  2. Step 2: Convert to fraction form
    197,123.12/272,029.92 = 107,699.12/x
  3. Step 3: Cross multiply
    197,123.12x = 272,029.92 × 107,699.12
  4. Step 4: Simplify right side
    197,123.12x = 29,297,382,997.67
  5. Step 5: Solve for x
    x = 29,297,382,997.67/197,123.12
  6. Step 6: Final answer
    x = 148,624.79

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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.