Home / 149,096.04-205,756.36-81,116.78

Finding the Fourth Proportional to 149,096.04, 205,756.36 and 81,116.78

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Solution

The fourth proportional to 149,096.04, 205,756.36 and 81,116.78 is: 111,943.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,096.04 : 205,756.36 = 81,116.78 : x
  2. Step 2: Convert to fraction form
    149,096.04/205,756.36 = 81,116.78/x
  3. Step 3: Cross multiply
    149,096.04x = 205,756.36 × 81,116.78
  4. Step 4: Simplify right side
    149,096.04x = 16,690,293,387.72
  5. Step 5: Solve for x
    x = 16,690,293,387.72/149,096.04
  6. Step 6: Final answer
    x = 111,943.24

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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.