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Finding the Fourth Proportional to 159,268.36, 219,790.37 and 87,648.39

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Solution

The fourth proportional to 159,268.36, 219,790.37 and 87,648.39 is: 120,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,268.36 : 219,790.37 = 87,648.39 : x
  2. Step 2: Convert to fraction form
    159,268.36/219,790.37 = 87,648.39/x
  3. Step 3: Cross multiply
    159,268.36x = 219,790.37 × 87,648.39
  4. Step 4: Simplify right side
    159,268.36x = 19,264,272,068.00
  5. Step 5: Solve for x
    x = 19,264,272,068.00/159,268.36
  6. Step 6: Final answer
    x = 120,954.80

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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.