Home / 161,531.19-222,920.37-89,915.79

Finding the Fourth Proportional to 161,531.19, 222,920.37 and 89,915.79

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Solution

The fourth proportional to 161,531.19, 222,920.37 and 89,915.79 is: 124,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,531.19 : 222,920.37 = 89,915.79 : x
  2. Step 2: Convert to fraction form
    161,531.19/222,920.37 = 89,915.79/x
  3. Step 3: Cross multiply
    161,531.19x = 222,920.37 × 89,915.79
  4. Step 4: Simplify right side
    161,531.19x = 20,044,061,175.64
  5. Step 5: Solve for x
    x = 20,044,061,175.64/161,531.19
  6. Step 6: Final answer
    x = 124,087.87

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1.5x scale

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.