Home / 103,664.56-155,493.96-72,520.24

Finding the Fourth Proportional to 103,664.56, 155,493.96 and 72,520.24

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Solution

The fourth proportional to 103,664.56, 155,493.96 and 72,520.24 is: 108,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,664.56 : 155,493.96 = 72,520.24 : x
  2. Step 2: Convert to fraction form
    103,664.56/155,493.96 = 72,520.24/x
  3. Step 3: Cross multiply
    103,664.56x = 155,493.96 × 72,520.24
  4. Step 4: Simplify right side
    103,664.56x = 11,276,459,297.75
  5. Step 5: Solve for x
    x = 11,276,459,297.75/103,664.56
  6. Step 6: Final answer
    x = 108,778.35

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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.