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Finding the Fourth Proportional to 138,576.52, 191,266.22 and 90,094.08

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Solution

The fourth proportional to 138,576.52, 191,266.22 and 90,094.08 is: 124,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,576.52 : 191,266.22 = 90,094.08 : x
  2. Step 2: Convert to fraction form
    138,576.52/191,266.22 = 90,094.08/x
  3. Step 3: Cross multiply
    138,576.52x = 191,266.22 × 90,094.08
  4. Step 4: Simplify right side
    138,576.52x = 17,231,954,125.98
  5. Step 5: Solve for x
    x = 17,231,954,125.98/138,576.52
  6. Step 6: Final answer
    x = 124,349.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.