Home / 190,111.92-285,110.28-79,278

Finding the Fourth Proportional to 190,111.92, 285,110.28 and 79,278

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Solution

The fourth proportional to 190,111.92, 285,110.28 and 79,278 is: 118,892.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,111.92 : 285,110.28 = 79,278 : x
  2. Step 2: Convert to fraction form
    190,111.92/285,110.28 = 79,278/x
  3. Step 3: Cross multiply
    190,111.92x = 285,110.28 × 79,278
  4. Step 4: Simplify right side
    190,111.92x = 22,602,972,777.84
  5. Step 5: Solve for x
    x = 22,602,972,777.84/190,111.92
  6. Step 6: Final answer
    x = 118,892.98

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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.