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Finding the Fourth Proportional to 159,809.40, 239,554.26 and 80,684.28

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Solution

The fourth proportional to 159,809.40, 239,554.26 and 80,684.28 is: 120,945.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,809.40 : 239,554.26 = 80,684.28 : x
  2. Step 2: Convert to fraction form
    159,809.40/239,554.26 = 80,684.28/x
  3. Step 3: Cross multiply
    159,809.40x = 239,554.26 × 80,684.28
  4. Step 4: Simplify right side
    159,809.40x = 19,328,262,989.03
  5. Step 5: Solve for x
    x = 19,328,262,989.03/159,809.40
  6. Step 6: Final answer
    x = 120,945.72

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1.5x scale

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.