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Finding the Fourth Proportional to 159,643.72, 220,309.82 and 88,026.31

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Solution

The fourth proportional to 159,643.72, 220,309.82 and 88,026.31 is: 121,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,643.72 : 220,309.82 = 88,026.31 : x
  2. Step 2: Convert to fraction form
    159,643.72/220,309.82 = 88,026.31/x
  3. Step 3: Cross multiply
    159,643.72x = 220,309.82 × 88,026.31
  4. Step 4: Simplify right side
    159,643.72x = 19,393,060,511.36
  5. Step 5: Solve for x
    x = 19,393,060,511.36/159,643.72
  6. Step 6: Final answer
    x = 121,477.13

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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.