Home / 149,973.45-206,961.02-81,988.86

Finding the Fourth Proportional to 149,973.45, 206,961.02 and 81,988.86

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Solution

The fourth proportional to 149,973.45, 206,961.02 and 81,988.86 is: 113,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,973.45 : 206,961.02 = 81,988.86 : x
  2. Step 2: Convert to fraction form
    149,973.45/206,961.02 = 81,988.86/x
  3. Step 3: Cross multiply
    149,973.45x = 206,961.02 × 81,988.86
  4. Step 4: Simplify right side
    149,973.45x = 16,968,497,684.29
  5. Step 5: Solve for x
    x = 16,968,497,684.29/149,973.45
  6. Step 6: Final answer
    x = 113,143.34

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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.