Home / 103,659.12-155,491.92-28,780.02

Finding the Fourth Proportional to 103,659.12, 155,491.92 and 28,780.02

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Solution

The fourth proportional to 103,659.12, 155,491.92 and 28,780.02 is: 43,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,659.12 : 155,491.92 = 28,780.02 : x
  2. Step 2: Convert to fraction form
    103,659.12/155,491.92 = 28,780.02/x
  3. Step 3: Cross multiply
    103,659.12x = 155,491.92 × 28,780.02
  4. Step 4: Simplify right side
    103,659.12x = 4,475,060,567.44
  5. Step 5: Solve for x
    x = 4,475,060,567.44/103,659.12
  6. Step 6: Final answer
    x = 43,170.93

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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.