Home / 149,136.10-205,807.74-82,068.10

Finding the Fourth Proportional to 149,136.10, 205,807.74 and 82,068.10

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Solution

The fourth proportional to 149,136.10, 205,807.74 and 82,068.10 is: 113,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,136.10 : 205,807.74 = 82,068.10 : x
  2. Step 2: Convert to fraction form
    149,136.10/205,807.74 = 82,068.10/x
  3. Step 3: Cross multiply
    149,136.10x = 205,807.74 × 82,068.10
  4. Step 4: Simplify right side
    149,136.10x = 16,890,250,187.09
  5. Step 5: Solve for x
    x = 16,890,250,187.09/149,136.10
  6. Step 6: Final answer
    x = 113,253.94

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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.