Home / 149,150.67-205,832.34-81,172.50

Finding the Fourth Proportional to 149,150.67, 205,832.34 and 81,172.50

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Solution

The fourth proportional to 149,150.67, 205,832.34 and 81,172.50 is: 112,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,150.67 : 205,832.34 = 81,172.50 : x
  2. Step 2: Convert to fraction form
    149,150.67/205,832.34 = 81,172.50/x
  3. Step 3: Cross multiply
    149,150.67x = 205,832.34 × 81,172.50
  4. Step 4: Simplify right side
    149,150.67x = 16,707,925,618.65
  5. Step 5: Solve for x
    x = 16,707,925,618.65/149,150.67
  6. Step 6: Final answer
    x = 112,020.45

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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.