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Finding the Fourth Proportional to 103,305.74, 154,812.12 and 43,269.52

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Solution

The fourth proportional to 103,305.74, 154,812.12 and 43,269.52 is: 64,842.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,305.74 : 154,812.12 = 43,269.52 : x
  2. Step 2: Convert to fraction form
    103,305.74/154,812.12 = 43,269.52/x
  3. Step 3: Cross multiply
    103,305.74x = 154,812.12 × 43,269.52
  4. Step 4: Simplify right side
    103,305.74x = 6,698,646,122.58
  5. Step 5: Solve for x
    x = 6,698,646,122.58/103,305.74
  6. Step 6: Final answer
    x = 64,842.92

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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.