Home / 103,817.60-155,596.80-76,083.20

Finding the Fourth Proportional to 103,817.60, 155,596.80 and 76,083.20

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Solution

The fourth proportional to 103,817.60, 155,596.80 and 76,083.20 is: 114,029.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,817.60 : 155,596.80 = 76,083.20 : x
  2. Step 2: Convert to fraction form
    103,817.60/155,596.80 = 76,083.20/x
  3. Step 3: Cross multiply
    103,817.60x = 155,596.80 × 76,083.20
  4. Step 4: Simplify right side
    103,817.60x = 11,838,302,453.76
  5. Step 5: Solve for x
    x = 11,838,302,453.76/103,817.60
  6. Step 6: Final answer
    x = 114,029.82

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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.