Home / 109,705.40-164,903.70-107,631.80

Finding the Fourth Proportional to 109,705.40, 164,903.70 and 107,631.80

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Solution

The fourth proportional to 109,705.40, 164,903.70 and 107,631.80 is: 161,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,705.40 : 164,903.70 = 107,631.80 : x
  2. Step 2: Convert to fraction form
    109,705.40/164,903.70 = 107,631.80/x
  3. Step 3: Cross multiply
    109,705.40x = 164,903.70 × 107,631.80
  4. Step 4: Simplify right side
    109,705.40x = 17,748,882,057.66
  5. Step 5: Solve for x
    x = 17,748,882,057.66/109,705.40
  6. Step 6: Final answer
    x = 161,786.77

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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.