Home / 122,864.54-169,512.15-100,164.40

Finding the Fourth Proportional to 122,864.54, 169,512.15 and 100,164.40

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Solution

The fourth proportional to 122,864.54, 169,512.15 and 100,164.40 is: 138,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,864.54 : 169,512.15 = 100,164.40 : x
  2. Step 2: Convert to fraction form
    122,864.54/169,512.15 = 100,164.40/x
  3. Step 3: Cross multiply
    122,864.54x = 169,512.15 × 100,164.40
  4. Step 4: Simplify right side
    122,864.54x = 16,979,082,797.46
  5. Step 5: Solve for x
    x = 16,979,082,797.46/122,864.54
  6. Step 6: Final answer
    x = 138,193.52

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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.