Home / 149,143.56-205,826.96-85,485.44

Finding the Fourth Proportional to 149,143.56, 205,826.96 and 85,485.44

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Solution

The fourth proportional to 149,143.56, 205,826.96 and 85,485.44 is: 117,974.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,143.56 : 205,826.96 = 85,485.44 : x
  2. Step 2: Convert to fraction form
    149,143.56/205,826.96 = 85,485.44/x
  3. Step 3: Cross multiply
    149,143.56x = 205,826.96 × 85,485.44
  4. Step 4: Simplify right side
    149,143.56x = 17,595,208,239.46
  5. Step 5: Solve for x
    x = 17,595,208,239.46/149,143.56
  6. Step 6: Final answer
    x = 117,974.98

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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.