Home / 109,728.20-164,592.30-72,792.20

Finding the Fourth Proportional to 109,728.20, 164,592.30 and 72,792.20

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Solution

The fourth proportional to 109,728.20, 164,592.30 and 72,792.20 is: 109,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.20 : 164,592.30 = 72,792.20 : x
  2. Step 2: Convert to fraction form
    109,728.20/164,592.30 = 72,792.20/x
  3. Step 3: Cross multiply
    109,728.20x = 164,592.30 × 72,792.20
  4. Step 4: Simplify right side
    109,728.20x = 11,981,035,620.06
  5. Step 5: Solve for x
    x = 11,981,035,620.06/109,728.20
  6. Step 6: Final answer
    x = 109,188.30

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1.5x scale

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.