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Finding the Fourth Proportional to 159,039.44, 219,476.16 and 86,442.32

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Solution

The fourth proportional to 159,039.44, 219,476.16 and 86,442.32 is: 119,291.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,039.44 : 219,476.16 = 86,442.32 : x
  2. Step 2: Convert to fraction form
    159,039.44/219,476.16 = 86,442.32/x
  3. Step 3: Cross multiply
    159,039.44x = 219,476.16 × 86,442.32
  4. Step 4: Simplify right side
    159,039.44x = 18,972,028,455.09
  5. Step 5: Solve for x
    x = 18,972,028,455.09/159,039.44
  6. Step 6: Final answer
    x = 119,291.34

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1.5x scale

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.