Home / 161,381.12-222,702.75-89,759.60

Finding the Fourth Proportional to 161,381.12, 222,702.75 and 89,759.60

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Solution

The fourth proportional to 161,381.12, 222,702.75 and 89,759.60 is: 123,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,381.12 : 222,702.75 = 89,759.60 : x
  2. Step 2: Convert to fraction form
    161,381.12/222,702.75 = 89,759.60/x
  3. Step 3: Cross multiply
    161,381.12x = 222,702.75 × 89,759.60
  4. Step 4: Simplify right side
    161,381.12x = 19,989,709,758.90
  5. Step 5: Solve for x
    x = 19,989,709,758.90/161,381.12
  6. Step 6: Final answer
    x = 123,866.47

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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.