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Finding the Fourth Proportional to 113,003.10, 169,699.05 and 79,955.10

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Solution

The fourth proportional to 113,003.10, 169,699.05 and 79,955.10 is: 120,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,003.10 : 169,699.05 = 79,955.10 : x
  2. Step 2: Convert to fraction form
    113,003.10/169,699.05 = 79,955.10/x
  3. Step 3: Cross multiply
    113,003.10x = 169,699.05 × 79,955.10
  4. Step 4: Simplify right side
    113,003.10x = 13,568,304,512.66
  5. Step 5: Solve for x
    x = 13,568,304,512.66/113,003.10
  6. Step 6: Final answer
    x = 120,070.20

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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.