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Finding the Fourth Proportional to 103,355.40, 155,033.10 and 36,870.60

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Solution

The fourth proportional to 103,355.40, 155,033.10 and 36,870.60 is: 55,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,355.40 : 155,033.10 = 36,870.60 : x
  2. Step 2: Convert to fraction form
    103,355.40/155,033.10 = 36,870.60/x
  3. Step 3: Cross multiply
    103,355.40x = 155,033.10 × 36,870.60
  4. Step 4: Simplify right side
    103,355.40x = 5,716,163,416.86
  5. Step 5: Solve for x
    x = 5,716,163,416.86/103,355.40
  6. Step 6: Final answer
    x = 55,305.90

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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.