Home / 149,425.32-206,194.50-85,749.60

Finding the Fourth Proportional to 149,425.32, 206,194.50 and 85,749.60

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Solution

The fourth proportional to 149,425.32, 206,194.50 and 85,749.60 is: 118,327.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,425.32 : 206,194.50 = 85,749.60 : x
  2. Step 2: Convert to fraction form
    149,425.32/206,194.50 = 85,749.60/x
  3. Step 3: Cross multiply
    149,425.32x = 206,194.50 × 85,749.60
  4. Step 4: Simplify right side
    149,425.32x = 17,681,095,897.20
  5. Step 5: Solve for x
    x = 17,681,095,897.20/149,425.32
  6. Step 6: Final answer
    x = 118,327.31

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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.