Home / 159,329.82-219,881.40-87,716.50

Finding the Fourth Proportional to 159,329.82, 219,881.40 and 87,716.50

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Solution

The fourth proportional to 159,329.82, 219,881.40 and 87,716.50 is: 121,052.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,329.82 : 219,881.40 = 87,716.50 : x
  2. Step 2: Convert to fraction form
    159,329.82/219,881.40 = 87,716.50/x
  3. Step 3: Cross multiply
    159,329.82x = 219,881.40 × 87,716.50
  4. Step 4: Simplify right side
    159,329.82x = 19,287,226,823.10
  5. Step 5: Solve for x
    x = 19,287,226,823.10/159,329.82
  6. Step 6: Final answer
    x = 121,052.21

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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.