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Finding the Fourth Proportional to 157,893.95, 217,893.13 and 86,274.56

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Solution

The fourth proportional to 157,893.95, 217,893.13 and 86,274.56 is: 119,058.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,893.95 : 217,893.13 = 86,274.56 : x
  2. Step 2: Convert to fraction form
    157,893.95/217,893.13 = 86,274.56/x
  3. Step 3: Cross multiply
    157,893.95x = 217,893.13 × 86,274.56
  4. Step 4: Simplify right side
    157,893.95x = 18,798,634,246.82
  5. Step 5: Solve for x
    x = 18,798,634,246.82/157,893.95
  6. Step 6: Final answer
    x = 119,058.61

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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.