Home / 81,545.85-122,172.98-69,881.85

Finding the Fourth Proportional to 81,545.85, 122,172.98 and 69,881.85

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Solution

The fourth proportional to 81,545.85, 122,172.98 and 69,881.85 is: 104,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,545.85 : 122,172.98 = 69,881.85 : x
  2. Step 2: Convert to fraction form
    81,545.85/122,172.98 = 69,881.85/x
  3. Step 3: Cross multiply
    81,545.85x = 122,172.98 × 69,881.85
  4. Step 4: Simplify right side
    81,545.85x = 8,537,673,513.00
  5. Step 5: Solve for x
    x = 8,537,673,513.00/81,545.85
  6. Step 6: Final answer
    x = 104,697.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.