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Finding the Fourth Proportional to 103,194.60, 154,792.08 and 28,315.76

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Solution

The fourth proportional to 103,194.60, 154,792.08 and 28,315.76 is: 42,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,194.60 : 154,792.08 = 28,315.76 : x
  2. Step 2: Convert to fraction form
    103,194.60/154,792.08 = 28,315.76/x
  3. Step 3: Cross multiply
    103,194.60x = 154,792.08 × 28,315.76
  4. Step 4: Simplify right side
    103,194.60x = 4,383,055,387.18
  5. Step 5: Solve for x
    x = 4,383,055,387.18/103,194.60
  6. Step 6: Final answer
    x = 42,473.69

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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.