Home / 109,028.70-163,543.05-71,703.90

Finding the Fourth Proportional to 109,028.70, 163,543.05 and 71,703.90

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Solution

The fourth proportional to 109,028.70, 163,543.05 and 71,703.90 is: 107,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,028.70 : 163,543.05 = 71,703.90 : x
  2. Step 2: Convert to fraction form
    109,028.70/163,543.05 = 71,703.90/x
  3. Step 3: Cross multiply
    109,028.70x = 163,543.05 × 71,703.90
  4. Step 4: Simplify right side
    109,028.70x = 11,726,674,502.90
  5. Step 5: Solve for x
    x = 11,726,674,502.90/109,028.70
  6. Step 6: Final answer
    x = 107,555.85

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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.