Home / 149,401.04-206,168.18-81,416.62

Finding the Fourth Proportional to 149,401.04, 206,168.18 and 81,416.62

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Solution

The fourth proportional to 149,401.04, 206,168.18 and 81,416.62 is: 112,352.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,401.04 : 206,168.18 = 81,416.62 : x
  2. Step 2: Convert to fraction form
    149,401.04/206,168.18 = 81,416.62/x
  3. Step 3: Cross multiply
    149,401.04x = 206,168.18 × 81,416.62
  4. Step 4: Simplify right side
    149,401.04x = 16,785,516,367.15
  5. Step 5: Solve for x
    x = 16,785,516,367.15/149,401.04
  6. Step 6: Final answer
    x = 112,352.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.