Home / 149,152.68-205,831.58-81,170.19

Finding the Fourth Proportional to 149,152.68, 205,831.58 and 81,170.19

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Solution

The fourth proportional to 149,152.68, 205,831.58 and 81,170.19 is: 112,015.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,152.68 : 205,831.58 = 81,170.19 : x
  2. Step 2: Convert to fraction form
    149,152.68/205,831.58 = 81,170.19/x
  3. Step 3: Cross multiply
    149,152.68x = 205,831.58 × 81,170.19
  4. Step 4: Simplify right side
    149,152.68x = 16,707,388,456.60
  5. Step 5: Solve for x
    x = 16,707,388,456.60/149,152.68
  6. Step 6: Final answer
    x = 112,015.34

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Double scale
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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.