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Finding the Fourth Proportional to 201,085.06, 301,560.62 and 81,111.03

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Solution

The fourth proportional to 201,085.06, 301,560.62 and 81,111.03 is: 121,639.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,085.06 : 301,560.62 = 81,111.03 : x
  2. Step 2: Convert to fraction form
    201,085.06/301,560.62 = 81,111.03/x
  3. Step 3: Cross multiply
    201,085.06x = 301,560.62 × 81,111.03
  4. Step 4: Simplify right side
    201,085.06x = 24,459,890,582.28
  5. Step 5: Solve for x
    x = 24,459,890,582.28/201,085.06
  6. Step 6: Final answer
    x = 121,639.52

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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.