Home / 159,078.69-219,530.07-87,459.22

Finding the Fourth Proportional to 159,078.69, 219,530.07 and 87,459.22

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Solution

The fourth proportional to 159,078.69, 219,530.07 and 87,459.22 is: 120,694.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,078.69 : 219,530.07 = 87,459.22 : x
  2. Step 2: Convert to fraction form
    159,078.69/219,530.07 = 87,459.22/x
  3. Step 3: Cross multiply
    159,078.69x = 219,530.07 × 87,459.22
  4. Step 4: Simplify right side
    159,078.69x = 19,199,928,688.75
  5. Step 5: Solve for x
    x = 19,199,928,688.75/159,078.69
  6. Step 6: Final answer
    x = 120,694.54

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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.