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Finding the Fourth Proportional to 190,974.96, 286,462.56 and 72,618.96

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Solution

The fourth proportional to 190,974.96, 286,462.56 and 72,618.96 is: 108,928.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,974.96 : 286,462.56 = 72,618.96 : x
  2. Step 2: Convert to fraction form
    190,974.96/286,462.56 = 72,618.96/x
  3. Step 3: Cross multiply
    190,974.96x = 286,462.56 × 72,618.96
  4. Step 4: Simplify right side
    190,974.96x = 20,802,613,186.14
  5. Step 5: Solve for x
    x = 20,802,613,186.14/190,974.96
  6. Step 6: Final answer
    x = 108,928.49

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1.5x scale

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.