Home / 149,389.44-206,154.74-81,407.02

Finding the Fourth Proportional to 149,389.44, 206,154.74 and 81,407.02

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Solution

The fourth proportional to 149,389.44, 206,154.74 and 81,407.02 is: 112,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,389.44 : 206,154.74 = 81,407.02 : x
  2. Step 2: Convert to fraction form
    149,389.44/206,154.74 = 81,407.02/x
  3. Step 3: Cross multiply
    149,389.44x = 206,154.74 × 81,407.02
  4. Step 4: Simplify right side
    149,389.44x = 16,782,443,042.27
  5. Step 5: Solve for x
    x = 16,782,443,042.27/149,389.44
  6. Step 6: Final answer
    x = 112,340.22

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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.