Home / 109,310.95-150,918.75-89,215.75

Finding the Fourth Proportional to 109,310.95, 150,918.75 and 89,215.75

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Solution

The fourth proportional to 109,310.95, 150,918.75 and 89,215.75 is: 123,174.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,310.95 : 150,918.75 = 89,215.75 : x
  2. Step 2: Convert to fraction form
    109,310.95/150,918.75 = 89,215.75/x
  3. Step 3: Cross multiply
    109,310.95x = 150,918.75 × 89,215.75
  4. Step 4: Simplify right side
    109,310.95x = 13,464,329,470.31
  5. Step 5: Solve for x
    x = 13,464,329,470.31/109,310.95
  6. Step 6: Final answer
    x = 123,174.57

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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.