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Finding the Fourth Proportional to 131,091.90, 180,923.67 and 88,647.90

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Solution

The fourth proportional to 131,091.90, 180,923.67 and 88,647.90 is: 122,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,091.90 : 180,923.67 = 88,647.90 : x
  2. Step 2: Convert to fraction form
    131,091.90/180,923.67 = 88,647.90/x
  3. Step 3: Cross multiply
    131,091.90x = 180,923.67 × 88,647.90
  4. Step 4: Simplify right side
    131,091.90x = 16,038,503,405.79
  5. Step 5: Solve for x
    x = 16,038,503,405.79/131,091.90
  6. Step 6: Final answer
    x = 122,345.50

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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.