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Finding the Fourth Proportional to 172,937.85, 238,617.95 and 104,990.60

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Solution

The fourth proportional to 172,937.85, 238,617.95 and 104,990.60 is: 144,864.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,937.85 : 238,617.95 = 104,990.60 : x
  2. Step 2: Convert to fraction form
    172,937.85/238,617.95 = 104,990.60/x
  3. Step 3: Cross multiply
    172,937.85x = 238,617.95 × 104,990.60
  4. Step 4: Simplify right side
    172,937.85x = 25,052,640,023.23
  5. Step 5: Solve for x
    x = 25,052,640,023.23/172,937.85
  6. Step 6: Final answer
    x = 144,864.99

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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.