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Finding the Fourth Proportional to 123,188.99, 169,999.98 and 69,474.47

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Solution

The fourth proportional to 123,188.99, 169,999.98 and 69,474.47 is: 95,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,188.99 : 169,999.98 = 69,474.47 : x
  2. Step 2: Convert to fraction form
    123,188.99/169,999.98 = 69,474.47/x
  3. Step 3: Cross multiply
    123,188.99x = 169,999.98 × 69,474.47
  4. Step 4: Simplify right side
    123,188.99x = 11,810,658,510.51
  5. Step 5: Solve for x
    x = 11,810,658,510.51/123,188.99
  6. Step 6: Final answer
    x = 95,874.30

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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.