Home / 159,131.51-219,597.10-87,511.53

Finding the Fourth Proportional to 159,131.51, 219,597.10 and 87,511.53

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Solution

The fourth proportional to 159,131.51, 219,597.10 and 87,511.53 is: 120,763.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,131.51 : 219,597.10 = 87,511.53 : x
  2. Step 2: Convert to fraction form
    159,131.51/219,597.10 = 87,511.53/x
  3. Step 3: Cross multiply
    159,131.51x = 219,597.10 × 87,511.53
  4. Step 4: Simplify right side
    159,131.51x = 19,217,277,974.57
  5. Step 5: Solve for x
    x = 19,217,277,974.57/159,131.51
  6. Step 6: Final answer
    x = 120,763.50

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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.