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Finding the Fourth Proportional to 122,577.88, 169,156.47 and 68,861.77

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Solution

The fourth proportional to 122,577.88, 169,156.47 and 68,861.77 is: 95,028.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,577.88 : 169,156.47 = 68,861.77 : x
  2. Step 2: Convert to fraction form
    122,577.88/169,156.47 = 68,861.77/x
  3. Step 3: Cross multiply
    122,577.88x = 169,156.47 × 68,861.77
  4. Step 4: Simplify right side
    122,577.88x = 11,648,413,085.37
  5. Step 5: Solve for x
    x = 11,648,413,085.37/122,577.88
  6. Step 6: Final answer
    x = 95,028.67

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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.