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Finding the Fourth Proportional to 123,999.80, 171,111.30 and 67,409.96

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Solution

The fourth proportional to 123,999.80, 171,111.30 and 67,409.96 is: 93,021.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.80 : 171,111.30 = 67,409.96 : x
  2. Step 2: Convert to fraction form
    123,999.80/171,111.30 = 67,409.96/x
  3. Step 3: Cross multiply
    123,999.80x = 171,111.30 × 67,409.96
  4. Step 4: Simplify right side
    123,999.80x = 11,534,605,888.55
  5. Step 5: Solve for x
    x = 11,534,605,888.55/123,999.80
  6. Step 6: Final answer
    x = 93,021.17

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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.