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Finding the Fourth Proportional to 159,403.02, 239,243.98 and 84,578.46

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Solution

The fourth proportional to 159,403.02, 239,243.98 and 84,578.46 is: 126,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,403.02 : 239,243.98 = 84,578.46 : x
  2. Step 2: Convert to fraction form
    159,403.02/239,243.98 = 84,578.46/x
  3. Step 3: Cross multiply
    159,403.02x = 239,243.98 × 84,578.46
  4. Step 4: Simplify right side
    159,403.02x = 20,234,887,392.67
  5. Step 5: Solve for x
    x = 20,234,887,392.67/159,403.02
  6. Step 6: Final answer
    x = 126,941.68

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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.