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Finding the Fourth Proportional to 159,436.51, 220,032.36 and 87,816.51

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Solution

The fourth proportional to 159,436.51, 220,032.36 and 87,816.51 is: 121,192.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.51 : 220,032.36 = 87,816.51 : x
  2. Step 2: Convert to fraction form
    159,436.51/220,032.36 = 87,816.51/x
  3. Step 3: Cross multiply
    159,436.51x = 220,032.36 × 87,816.51
  4. Step 4: Simplify right side
    159,436.51x = 19,322,473,942.26
  5. Step 5: Solve for x
    x = 19,322,473,942.26/159,436.51
  6. Step 6: Final answer
    x = 121,192.28

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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.