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Finding the Fourth Proportional to 143,973.99, 215,785.85 and 101,866.21

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Solution

The fourth proportional to 143,973.99, 215,785.85 and 101,866.21 is: 152,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,973.99 : 215,785.85 = 101,866.21 : x
  2. Step 2: Convert to fraction form
    143,973.99/215,785.85 = 101,866.21/x
  3. Step 3: Cross multiply
    143,973.99x = 215,785.85 × 101,866.21
  4. Step 4: Simplify right side
    143,973.99x = 21,981,286,456.46
  5. Step 5: Solve for x
    x = 21,981,286,456.46/143,973.99
  6. Step 6: Final answer
    x = 152,675.40

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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.