Home / 149,749.02-206,657.90-81,770.31

Finding the Fourth Proportional to 149,749.02, 206,657.90 and 81,770.31

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Solution

The fourth proportional to 149,749.02, 206,657.90 and 81,770.31 is: 112,845.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,749.02 : 206,657.90 = 81,770.31 : x
  2. Step 2: Convert to fraction form
    149,749.02/206,657.90 = 81,770.31/x
  3. Step 3: Cross multiply
    149,749.02x = 206,657.90 × 81,770.31
  4. Step 4: Simplify right side
    149,749.02x = 16,898,479,104.81
  5. Step 5: Solve for x
    x = 16,898,479,104.81/149,749.02
  6. Step 6: Final answer
    x = 112,845.34

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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.