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Finding the Fourth Proportional to 123,999.52, 171,112.80 and 67,410.64

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Solution

The fourth proportional to 123,999.52, 171,112.80 and 67,410.64 is: 93,023.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.52 : 171,112.80 = 67,410.64 : x
  2. Step 2: Convert to fraction form
    123,999.52/171,112.80 = 67,410.64/x
  3. Step 3: Cross multiply
    123,999.52x = 171,112.80 × 67,410.64
  4. Step 4: Simplify right side
    123,999.52x = 11,534,823,360.19
  5. Step 5: Solve for x
    x = 11,534,823,360.19/123,999.52
  6. Step 6: Final answer
    x = 93,023.13

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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.