Home / 103,921.80-155,493.45-74,005.20

Finding the Fourth Proportional to 103,921.80, 155,493.45 and 74,005.20

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Solution

The fourth proportional to 103,921.80, 155,493.45 and 74,005.20 is: 110,730.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,921.80 : 155,493.45 = 74,005.20 : x
  2. Step 2: Convert to fraction form
    103,921.80/155,493.45 = 74,005.20/x
  3. Step 3: Cross multiply
    103,921.80x = 155,493.45 × 74,005.20
  4. Step 4: Simplify right side
    103,921.80x = 11,507,323,865.94
  5. Step 5: Solve for x
    x = 11,507,323,865.94/103,921.80
  6. Step 6: Final answer
    x = 110,730.61

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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.