Home / 190,112.67-285,111.40-79,278.75

Finding the Fourth Proportional to 190,112.67, 285,111.40 and 79,278.75

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Solution

The fourth proportional to 190,112.67, 285,111.40 and 79,278.75 is: 118,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,112.67 : 285,111.40 = 79,278.75 : x
  2. Step 2: Convert to fraction form
    190,112.67/285,111.40 = 79,278.75/x
  3. Step 3: Cross multiply
    190,112.67x = 285,111.40 × 79,278.75
  4. Step 4: Simplify right side
    190,112.67x = 22,603,275,402.75
  5. Step 5: Solve for x
    x = 22,603,275,402.75/190,112.67
  6. Step 6: Final answer
    x = 118,894.10

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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.