Home / 109,782.20-164,673.30-72,846.20

Finding the Fourth Proportional to 109,782.20, 164,673.30 and 72,846.20

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Solution

The fourth proportional to 109,782.20, 164,673.30 and 72,846.20 is: 109,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.20 : 164,673.30 = 72,846.20 : x
  2. Step 2: Convert to fraction form
    109,782.20/164,673.30 = 72,846.20/x
  3. Step 3: Cross multiply
    109,782.20x = 164,673.30 × 72,846.20
  4. Step 4: Simplify right side
    109,782.20x = 11,995,824,146.46
  5. Step 5: Solve for x
    x = 11,995,824,146.46/109,782.20
  6. Step 6: Final answer
    x = 109,269.30

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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.