Home / 85,128.84-117,282.06-67,217.22

Finding the Fourth Proportional to 85,128.84, 117,282.06 and 67,217.22

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Solution

The fourth proportional to 85,128.84, 117,282.06 and 67,217.22 is: 92,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,128.84 : 117,282.06 = 67,217.22 : x
  2. Step 2: Convert to fraction form
    85,128.84/117,282.06 = 67,217.22/x
  3. Step 3: Cross multiply
    85,128.84x = 117,282.06 × 67,217.22
  4. Step 4: Simplify right side
    85,128.84x = 7,883,374,029.07
  5. Step 5: Solve for x
    x = 7,883,374,029.07/85,128.84
  6. Step 6: Final answer
    x = 92,605.21

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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.