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Finding the Fourth Proportional to 159,603.10, 239,404.65 and 139,903.90

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Solution

The fourth proportional to 159,603.10, 239,404.65 and 139,903.90 is: 209,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,603.10 : 239,404.65 = 139,903.90 : x
  2. Step 2: Convert to fraction form
    159,603.10/239,404.65 = 139,903.90/x
  3. Step 3: Cross multiply
    159,603.10x = 239,404.65 × 139,903.90
  4. Step 4: Simplify right side
    159,603.10x = 33,493,644,213.14
  5. Step 5: Solve for x
    x = 33,493,644,213.14/159,603.10
  6. Step 6: Final answer
    x = 209,855.85

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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.