Home / 105,910.30-158,901.90-66,421.18

Finding the Fourth Proportional to 105,910.30, 158,901.90 and 66,421.18

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Solution

The fourth proportional to 105,910.30, 158,901.90 and 66,421.18 is: 99,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,910.30 : 158,901.90 = 66,421.18 : x
  2. Step 2: Convert to fraction form
    105,910.30/158,901.90 = 66,421.18/x
  3. Step 3: Cross multiply
    105,910.30x = 158,901.90 × 66,421.18
  4. Step 4: Simplify right side
    105,910.30x = 10,554,451,702.24
  5. Step 5: Solve for x
    x = 10,554,451,702.24/105,910.30
  6. Step 6: Final answer
    x = 99,654.63

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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.