Home / 190,781.83-286,213.22-72,450.55

Finding the Fourth Proportional to 190,781.83, 286,213.22 and 72,450.55

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Solution

The fourth proportional to 190,781.83, 286,213.22 and 72,450.55 is: 108,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,781.83 : 286,213.22 = 72,450.55 : x
  2. Step 2: Convert to fraction form
    190,781.83/286,213.22 = 72,450.55/x
  3. Step 3: Cross multiply
    190,781.83x = 286,213.22 × 72,450.55
  4. Step 4: Simplify right side
    190,781.83x = 20,736,303,412.95
  5. Step 5: Solve for x
    x = 20,736,303,412.95/190,781.83
  6. Step 6: Final answer
    x = 108,691.19

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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.