Home / 109,030.70-163,546.05-71,705.90

Finding the Fourth Proportional to 109,030.70, 163,546.05 and 71,705.90

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Solution

The fourth proportional to 109,030.70, 163,546.05 and 71,705.90 is: 107,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,030.70 : 163,546.05 = 71,705.90 : x
  2. Step 2: Convert to fraction form
    109,030.70/163,546.05 = 71,705.90/x
  3. Step 3: Cross multiply
    109,030.70x = 163,546.05 × 71,705.90
  4. Step 4: Simplify right side
    109,030.70x = 11,727,216,706.70
  5. Step 5: Solve for x
    x = 11,727,216,706.70/109,030.70
  6. Step 6: Final answer
    x = 107,558.85

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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.