Home / 159,722.40-220,487.76-103,161.36

Finding the Fourth Proportional to 159,722.40, 220,487.76 and 103,161.36

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Solution

The fourth proportional to 159,722.40, 220,487.76 and 103,161.36 is: 142,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,722.40 : 220,487.76 = 103,161.36 : x
  2. Step 2: Convert to fraction form
    159,722.40/220,487.76 = 103,161.36/x
  3. Step 3: Cross multiply
    159,722.40x = 220,487.76 × 103,161.36
  4. Step 4: Simplify right side
    159,722.40x = 22,745,817,184.95
  5. Step 5: Solve for x
    x = 22,745,817,184.95/159,722.40
  6. Step 6: Final answer
    x = 142,408.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.