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Finding the Fourth Proportional to 103,744.80, 155,617.20 and 93,247.20

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Solution

The fourth proportional to 103,744.80, 155,617.20 and 93,247.20 is: 139,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,744.80 : 155,617.20 = 93,247.20 : x
  2. Step 2: Convert to fraction form
    103,744.80/155,617.20 = 93,247.20/x
  3. Step 3: Cross multiply
    103,744.80x = 155,617.20 × 93,247.20
  4. Step 4: Simplify right side
    103,744.80x = 14,510,868,171.84
  5. Step 5: Solve for x
    x = 14,510,868,171.84/103,744.80
  6. Step 6: Final answer
    x = 139,870.80

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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.