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Finding the Fourth Proportional to 125,663.89, 173,254.48 and 102,919.09

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Solution

The fourth proportional to 125,663.89, 173,254.48 and 102,919.09 is: 141,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,663.89 : 173,254.48 = 102,919.09 : x
  2. Step 2: Convert to fraction form
    125,663.89/173,254.48 = 102,919.09/x
  3. Step 3: Cross multiply
    125,663.89x = 173,254.48 × 102,919.09
  4. Step 4: Simplify right side
    125,663.89x = 17,831,193,420.02
  5. Step 5: Solve for x
    x = 17,831,193,420.02/125,663.89
  6. Step 6: Final answer
    x = 141,895.92

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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.