Home / 159,086.40-219,533.62-87,465.87

Finding the Fourth Proportional to 159,086.40, 219,533.62 and 87,465.87

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Solution

The fourth proportional to 159,086.40, 219,533.62 and 87,465.87 is: 120,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,086.40 : 219,533.62 = 87,465.87 : x
  2. Step 2: Convert to fraction form
    159,086.40/219,533.62 = 87,465.87/x
  3. Step 3: Cross multiply
    159,086.40x = 219,533.62 × 87,465.87
  4. Step 4: Simplify right side
    159,086.40x = 19,201,699,067.55
  5. Step 5: Solve for x
    x = 19,201,699,067.55/159,086.40
  6. Step 6: Final answer
    x = 120,699.82

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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.