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Finding the Fourth Proportional to 103,518.40, 155,277.60 and 72,025.60

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Solution

The fourth proportional to 103,518.40, 155,277.60 and 72,025.60 is: 108,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,518.40 : 155,277.60 = 72,025.60 : x
  2. Step 2: Convert to fraction form
    103,518.40/155,277.60 = 72,025.60/x
  3. Step 3: Cross multiply
    103,518.40x = 155,277.60 × 72,025.60
  4. Step 4: Simplify right side
    103,518.40x = 11,183,962,306.56
  5. Step 5: Solve for x
    x = 11,183,962,306.56/103,518.40
  6. Step 6: Final answer
    x = 108,038.40

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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.