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Finding the Fourth Proportional to 149,212.94, 205,881.93 and 88,771.77

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Solution

The fourth proportional to 149,212.94, 205,881.93 and 88,771.77 is: 122,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,212.94 : 205,881.93 = 88,771.77 : x
  2. Step 2: Convert to fraction form
    149,212.94/205,881.93 = 88,771.77/x
  3. Step 3: Cross multiply
    149,212.94x = 205,881.93 × 88,771.77
  4. Step 4: Simplify right side
    149,212.94x = 18,276,503,337.12
  5. Step 5: Solve for x
    x = 18,276,503,337.12/149,212.94
  6. Step 6: Final answer
    x = 122,486.05

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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.