Home / 125,781.03-173,578.28-68,420.34

Finding the Fourth Proportional to 125,781.03, 173,578.28 and 68,420.34

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Solution

The fourth proportional to 125,781.03, 173,578.28 and 68,420.34 is: 94,420.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,781.03 : 173,578.28 = 68,420.34 : x
  2. Step 2: Convert to fraction form
    125,781.03/173,578.28 = 68,420.34/x
  3. Step 3: Cross multiply
    125,781.03x = 173,578.28 × 68,420.34
  4. Step 4: Simplify right side
    125,781.03x = 11,876,284,592.11
  5. Step 5: Solve for x
    x = 11,876,284,592.11/125,781.03
  6. Step 6: Final answer
    x = 94,420.32

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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.