Home / 190,381.71-262,728.32-105,500.19

Finding the Fourth Proportional to 190,381.71, 262,728.32 and 105,500.19

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Solution

The fourth proportional to 190,381.71, 262,728.32 and 105,500.19 is: 145,591.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,381.71 : 262,728.32 = 105,500.19 : x
  2. Step 2: Convert to fraction form
    190,381.71/262,728.32 = 105,500.19/x
  3. Step 3: Cross multiply
    190,381.71x = 262,728.32 × 105,500.19
  4. Step 4: Simplify right side
    190,381.71x = 27,717,887,150.88
  5. Step 5: Solve for x
    x = 27,717,887,150.88/190,381.71
  6. Step 6: Final answer
    x = 145,591.12

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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.