Home / 159,012.09-219,441.95-87,394.65

Finding the Fourth Proportional to 159,012.09, 219,441.95 and 87,394.65

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Solution

The fourth proportional to 159,012.09, 219,441.95 and 87,394.65 is: 120,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,012.09 : 219,441.95 = 87,394.65 : x
  2. Step 2: Convert to fraction form
    159,012.09/219,441.95 = 87,394.65/x
  3. Step 3: Cross multiply
    159,012.09x = 219,441.95 × 87,394.65
  4. Step 4: Simplify right side
    159,012.09x = 19,178,052,415.57
  5. Step 5: Solve for x
    x = 19,178,052,415.57/159,012.09
  6. Step 6: Final answer
    x = 120,607.51

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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.