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Finding the Fourth Proportional to 101,745.72, 140,270.94 and 85,802.22

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Solution

The fourth proportional to 101,745.72, 140,270.94 and 85,802.22 is: 118,290.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,745.72 : 140,270.94 = 85,802.22 : x
  2. Step 2: Convert to fraction form
    101,745.72/140,270.94 = 85,802.22/x
  3. Step 3: Cross multiply
    101,745.72x = 140,270.94 × 85,802.22
  4. Step 4: Simplify right side
    101,745.72x = 12,035,558,053.49
  5. Step 5: Solve for x
    x = 12,035,558,053.49/101,745.72
  6. Step 6: Final answer
    x = 118,290.56

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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.