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Finding the Fourth Proportional to 203,675.10, 305,389.92 and 91,335

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Solution

The fourth proportional to 203,675.10, 305,389.92 and 91,335 is: 136,947.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,675.10 : 305,389.92 = 91,335 : x
  2. Step 2: Convert to fraction form
    203,675.10/305,389.92 = 91,335/x
  3. Step 3: Cross multiply
    203,675.10x = 305,389.92 × 91,335
  4. Step 4: Simplify right side
    203,675.10x = 27,892,788,343.20
  5. Step 5: Solve for x
    x = 27,892,788,343.20/203,675.10
  6. Step 6: Final answer
    x = 136,947.46

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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.