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Finding the Fourth Proportional to 125,398.88, 173,045.20 and 68,806.60

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Solution

The fourth proportional to 125,398.88, 173,045.20 and 68,806.60 is: 94,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,398.88 : 173,045.20 = 68,806.60 : x
  2. Step 2: Convert to fraction form
    125,398.88/173,045.20 = 68,806.60/x
  3. Step 3: Cross multiply
    125,398.88x = 173,045.20 × 68,806.60
  4. Step 4: Simplify right side
    125,398.88x = 11,906,651,858.32
  5. Step 5: Solve for x
    x = 11,906,651,858.32/125,398.88
  6. Step 6: Final answer
    x = 94,950.22

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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.