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Finding the Fourth Proportional to 157,877.89, 217,886.28 and 86,268.52

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Solution

The fourth proportional to 157,877.89, 217,886.28 and 86,268.52 is: 119,058.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,877.89 : 217,886.28 = 86,268.52 : x
  2. Step 2: Convert to fraction form
    157,877.89/217,886.28 = 86,268.52/x
  3. Step 3: Cross multiply
    157,877.89x = 217,886.28 × 86,268.52
  4. Step 4: Simplify right side
    157,877.89x = 18,796,726,903.91
  5. Step 5: Solve for x
    x = 18,796,726,903.91/157,877.89
  6. Step 6: Final answer
    x = 119,058.64

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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.