Home / 149,137.80-205,810.23-85,475.64

Finding the Fourth Proportional to 149,137.80, 205,810.23 and 85,475.64

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Solution

The fourth proportional to 149,137.80, 205,810.23 and 85,475.64 is: 117,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,137.80 : 205,810.23 = 85,475.64 : x
  2. Step 2: Convert to fraction form
    149,137.80/205,810.23 = 85,475.64/x
  3. Step 3: Cross multiply
    149,137.80x = 205,810.23 × 85,475.64
  4. Step 4: Simplify right side
    149,137.80x = 17,591,761,127.80
  5. Step 5: Solve for x
    x = 17,591,761,127.80/149,137.80
  6. Step 6: Final answer
    x = 117,956.42

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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.