Home / 143,301.91-197,548.23-100,147.45

Finding the Fourth Proportional to 143,301.91, 197,548.23 and 100,147.45

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Solution

The fourth proportional to 143,301.91, 197,548.23 and 100,147.45 is: 138,057.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,301.91 : 197,548.23 = 100,147.45 : x
  2. Step 2: Convert to fraction form
    143,301.91/197,548.23 = 100,147.45/x
  3. Step 3: Cross multiply
    143,301.91x = 197,548.23 × 100,147.45
  4. Step 4: Simplify right side
    143,301.91x = 19,783,951,486.51
  5. Step 5: Solve for x
    x = 19,783,951,486.51/143,301.91
  6. Step 6: Final answer
    x = 138,057.84

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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.