Home / 90,769,450.32-135,446,219.46-80,986,810.32

Finding the Fourth Proportional to 90,769,450.32, 135,446,219.46 and 80,986,810.32

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Solution

The fourth proportional to 90,769,450.32, 135,446,219.46 and 80,986,810.32 is: 120,848,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,769,450.32 : 135,446,219.46 = 80,986,810.32 : x
  2. Step 2: Convert to fraction form
    90,769,450.32/135,446,219.46 = 80,986,810.32/x
  3. Step 3: Cross multiply
    90,769,450.32x = 135,446,219.46 × 80,986,810.32
  4. Step 4: Simplify right side
    90,769,450.32x = 10,969,357,283,968,112
  5. Step 5: Solve for x
    x = 10,969,357,283,968,112/90,769,450.32
  6. Step 6: Final answer
    x = 120,848,559.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.