Home / 159,327.03-219,869.55-87,705.57

Finding the Fourth Proportional to 159,327.03, 219,869.55 and 87,705.57

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Solution

The fourth proportional to 159,327.03, 219,869.55 and 87,705.57 is: 121,032.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,327.03 : 219,869.55 = 87,705.57 : x
  2. Step 2: Convert to fraction form
    159,327.03/219,869.55 = 87,705.57/x
  3. Step 3: Cross multiply
    159,327.03x = 219,869.55 × 87,705.57
  4. Step 4: Simplify right side
    159,327.03x = 19,283,784,208.39
  5. Step 5: Solve for x
    x = 19,283,784,208.39/159,327.03
  6. Step 6: Final answer
    x = 121,032.72

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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.