Home / 109,883.20-164,824.80-72,947.20

Finding the Fourth Proportional to 109,883.20, 164,824.80 and 72,947.20

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Solution

The fourth proportional to 109,883.20, 164,824.80 and 72,947.20 is: 109,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,883.20 : 164,824.80 = 72,947.20 : x
  2. Step 2: Convert to fraction form
    109,883.20/164,824.80 = 72,947.20/x
  3. Step 3: Cross multiply
    109,883.20x = 164,824.80 × 72,947.20
  4. Step 4: Simplify right side
    109,883.20x = 12,023,507,650.56
  5. Step 5: Solve for x
    x = 12,023,507,650.56/109,883.20
  6. Step 6: Final answer
    x = 109,420.80

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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.