Home / 159,220.86-219,725.19-87,605.34

Finding the Fourth Proportional to 159,220.86, 219,725.19 and 87,605.34

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Solution

The fourth proportional to 159,220.86, 219,725.19 and 87,605.34 is: 120,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,220.86 : 219,725.19 = 87,605.34 : x
  2. Step 2: Convert to fraction form
    159,220.86/219,725.19 = 87,605.34/x
  3. Step 3: Cross multiply
    159,220.86x = 219,725.19 × 87,605.34
  4. Step 4: Simplify right side
    159,220.86x = 19,249,099,976.51
  5. Step 5: Solve for x
    x = 19,249,099,976.51/159,220.86
  6. Step 6: Final answer
    x = 120,895.59

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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.