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Finding the Fourth Proportional to 159,809.22, 239,820.84 and 66,315.06

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Solution

The fourth proportional to 159,809.22, 239,820.84 and 66,315.06 is: 99,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,809.22 : 239,820.84 = 66,315.06 : x
  2. Step 2: Convert to fraction form
    159,809.22/239,820.84 = 66,315.06/x
  3. Step 3: Cross multiply
    159,809.22x = 239,820.84 × 66,315.06
  4. Step 4: Simplify right side
    159,809.22x = 15,903,733,393.85
  5. Step 5: Solve for x
    x = 15,903,733,393.85/159,809.22
  6. Step 6: Final answer
    x = 99,517.00

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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.