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Finding the Fourth Proportional to 149,186.76, 205,871.67 and 85,480.26

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Solution

The fourth proportional to 149,186.76, 205,871.67 and 85,480.26 is: 117,959.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,186.76 : 205,871.67 = 85,480.26 : x
  2. Step 2: Convert to fraction form
    149,186.76/205,871.67 = 85,480.26/x
  3. Step 3: Cross multiply
    149,186.76x = 205,871.67 × 85,480.26
  4. Step 4: Simplify right side
    149,186.76x = 17,597,963,878.23
  5. Step 5: Solve for x
    x = 17,597,963,878.23/149,186.76
  6. Step 6: Final answer
    x = 117,959.29

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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.