Home / 369,789.20-554,745.16-129,840.87

Finding the Fourth Proportional to 369,789.20, 554,745.16 and 129,840.87

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Solution

The fourth proportional to 369,789.20, 554,745.16 and 129,840.87 is: 194,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,789.20 : 554,745.16 = 129,840.87 : x
  2. Step 2: Convert to fraction form
    369,789.20/554,745.16 = 129,840.87/x
  3. Step 3: Cross multiply
    369,789.20x = 554,745.16 × 129,840.87
  4. Step 4: Simplify right side
    369,789.20x = 72,028,595,714.93
  5. Step 5: Solve for x
    x = 72,028,595,714.93/369,789.20
  6. Step 6: Final answer
    x = 194,782.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.