Home / 109,605.40-164,080.05-103,117.30

Finding the Fourth Proportional to 109,605.40, 164,080.05 and 103,117.30

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Solution

The fourth proportional to 109,605.40, 164,080.05 and 103,117.30 is: 154,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,605.40 : 164,080.05 = 103,117.30 : x
  2. Step 2: Convert to fraction form
    109,605.40/164,080.05 = 103,117.30/x
  3. Step 3: Cross multiply
    109,605.40x = 164,080.05 × 103,117.30
  4. Step 4: Simplify right side
    109,605.40x = 16,919,491,739.87
  5. Step 5: Solve for x
    x = 16,919,491,739.87/109,605.40
  6. Step 6: Final answer
    x = 154,367.32

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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.