Home / 122,611.86-169,208.64-68,895.72

Finding the Fourth Proportional to 122,611.86, 169,208.64 and 68,895.72

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Solution

The fourth proportional to 122,611.86, 169,208.64 and 68,895.72 is: 95,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,611.86 : 169,208.64 = 68,895.72 : x
  2. Step 2: Convert to fraction form
    122,611.86/169,208.64 = 68,895.72/x
  3. Step 3: Cross multiply
    122,611.86x = 169,208.64 × 68,895.72
  4. Step 4: Simplify right side
    122,611.86x = 11,657,751,083.02
  5. Step 5: Solve for x
    x = 11,657,751,083.02/122,611.86
  6. Step 6: Final answer
    x = 95,078.49

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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.