Home / 109,612.40-164,224.20-89,783.60

Finding the Fourth Proportional to 109,612.40, 164,224.20 and 89,783.60

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Solution

The fourth proportional to 109,612.40, 164,224.20 and 89,783.60 is: 134,516.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,612.40 : 164,224.20 = 89,783.60 : x
  2. Step 2: Convert to fraction form
    109,612.40/164,224.20 = 89,783.60/x
  3. Step 3: Cross multiply
    109,612.40x = 164,224.20 × 89,783.60
  4. Step 4: Simplify right side
    109,612.40x = 14,744,639,883.12
  5. Step 5: Solve for x
    x = 14,744,639,883.12/109,612.40
  6. Step 6: Final answer
    x = 134,516.17

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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.