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Finding the Fourth Proportional to 123,571.65, 170,536.23 and 69,861.63

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Solution

The fourth proportional to 123,571.65, 170,536.23 and 69,861.63 is: 96,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,571.65 : 170,536.23 = 69,861.63 : x
  2. Step 2: Convert to fraction form
    123,571.65/170,536.23 = 69,861.63/x
  3. Step 3: Cross multiply
    123,571.65x = 170,536.23 × 69,861.63
  4. Step 4: Simplify right side
    123,571.65x = 11,913,939,001.85
  5. Step 5: Solve for x
    x = 11,913,939,001.85/123,571.65
  6. Step 6: Final answer
    x = 96,413.21

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1.5x scale

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.