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Finding the Fourth Proportional to 125,749.98, 173,536.14 and 68,389.86

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Solution

The fourth proportional to 125,749.98, 173,536.14 and 68,389.86 is: 94,378.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,749.98 : 173,536.14 = 68,389.86 : x
  2. Step 2: Convert to fraction form
    125,749.98/173,536.14 = 68,389.86/x
  3. Step 3: Cross multiply
    125,749.98x = 173,536.14 × 68,389.86
  4. Step 4: Simplify right side
    125,749.98x = 11,868,112,319.54
  5. Step 5: Solve for x
    x = 11,868,112,319.54/125,749.98
  6. Step 6: Final answer
    x = 94,378.64

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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.