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Finding the Fourth Proportional to 157,866.42, 217,826.01 and 89,879.28

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Solution

The fourth proportional to 157,866.42, 217,826.01 and 89,879.28 is: 124,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,866.42 : 217,826.01 = 89,879.28 : x
  2. Step 2: Convert to fraction form
    157,866.42/217,826.01 = 89,879.28/x
  3. Step 3: Cross multiply
    157,866.42x = 217,826.01 × 89,879.28
  4. Step 4: Simplify right side
    157,866.42x = 19,578,044,944.07
  5. Step 5: Solve for x
    x = 19,578,044,944.07/157,866.42
  6. Step 6: Final answer
    x = 124,016.53

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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.