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Finding the Fourth Proportional to 143,607.30, 214,810.95 and 100,909.73

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Solution

The fourth proportional to 143,607.30, 214,810.95 and 100,909.73 is: 150,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,607.30 : 214,810.95 = 100,909.73 : x
  2. Step 2: Convert to fraction form
    143,607.30/214,810.95 = 100,909.73/x
  3. Step 3: Cross multiply
    143,607.30x = 214,810.95 × 100,909.73
  4. Step 4: Simplify right side
    143,607.30x = 21,676,514,998.02
  5. Step 5: Solve for x
    x = 21,676,514,998.02/143,607.30
  6. Step 6: Final answer
    x = 150,942.99

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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.