Home / 124,076.12-171,133.30-78,714.95

Finding the Fourth Proportional to 124,076.12, 171,133.30 and 78,714.95

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Solution

The fourth proportional to 124,076.12, 171,133.30 and 78,714.95 is: 108,568.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,076.12 : 171,133.30 = 78,714.95 : x
  2. Step 2: Convert to fraction form
    124,076.12/171,133.30 = 78,714.95/x
  3. Step 3: Cross multiply
    124,076.12x = 171,133.30 × 78,714.95
  4. Step 4: Simplify right side
    124,076.12x = 13,470,749,383.88
  5. Step 5: Solve for x
    x = 13,470,749,383.88/124,076.12
  6. Step 6: Final answer
    x = 108,568.43

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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.