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Finding the Fourth Proportional to 103,288.94, 154,894.52 and 81,360.62

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Solution

The fourth proportional to 103,288.94, 154,894.52 and 81,360.62 is: 122,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,288.94 : 154,894.52 = 81,360.62 : x
  2. Step 2: Convert to fraction form
    103,288.94/154,894.52 = 81,360.62/x
  3. Step 3: Cross multiply
    103,288.94x = 154,894.52 × 81,360.62
  4. Step 4: Simplify right side
    103,288.94x = 12,602,314,181.80
  5. Step 5: Solve for x
    x = 12,602,314,181.80/103,288.94
  6. Step 6: Final answer
    x = 122,010.30

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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.