Home / 113,020.11-169,530.03-105,546.78

Finding the Fourth Proportional to 113,020.11, 169,530.03 and 105,546.78

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Solution

The fourth proportional to 113,020.11, 169,530.03 and 105,546.78 is: 158,320.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,020.11 : 169,530.03 = 105,546.78 : x
  2. Step 2: Convert to fraction form
    113,020.11/169,530.03 = 105,546.78/x
  3. Step 3: Cross multiply
    113,020.11x = 169,530.03 × 105,546.78
  4. Step 4: Simplify right side
    113,020.11x = 17,893,348,779.80
  5. Step 5: Solve for x
    x = 17,893,348,779.80/113,020.11
  6. Step 6: Final answer
    x = 158,320.04

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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.