Home / 190,381.21-262,727.63-105,499.69

Finding the Fourth Proportional to 190,381.21, 262,727.63 and 105,499.69

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Solution

The fourth proportional to 190,381.21, 262,727.63 and 105,499.69 is: 145,590.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,381.21 : 262,727.63 = 105,499.69 : x
  2. Step 2: Convert to fraction form
    190,381.21/262,727.63 = 105,499.69/x
  3. Step 3: Cross multiply
    190,381.21x = 262,727.63 × 105,499.69
  4. Step 4: Simplify right side
    190,381.21x = 27,717,683,519.43
  5. Step 5: Solve for x
    x = 27,717,683,519.43/190,381.21
  6. Step 6: Final answer
    x = 145,590.44

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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.