Home / 124,712.20-172,100.04-68,123.80

Finding the Fourth Proportional to 124,712.20, 172,100.04 and 68,123.80

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Solution

The fourth proportional to 124,712.20, 172,100.04 and 68,123.80 is: 94,009.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,712.20 : 172,100.04 = 68,123.80 : x
  2. Step 2: Convert to fraction form
    124,712.20/172,100.04 = 68,123.80/x
  3. Step 3: Cross multiply
    124,712.20x = 172,100.04 × 68,123.80
  4. Step 4: Simplify right side
    124,712.20x = 11,724,108,704.95
  5. Step 5: Solve for x
    x = 11,724,108,704.95/124,712.20
  6. Step 6: Final answer
    x = 94,009.32

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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.