Home / 149,074.02-205,716.21-81,091.07

Finding the Fourth Proportional to 149,074.02, 205,716.21 and 81,091.07

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Solution

The fourth proportional to 149,074.02, 205,716.21 and 81,091.07 is: 111,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,074.02 : 205,716.21 = 81,091.07 : x
  2. Step 2: Convert to fraction form
    149,074.02/205,716.21 = 81,091.07/x
  3. Step 3: Cross multiply
    149,074.02x = 205,716.21 × 81,091.07
  4. Step 4: Simplify right side
    149,074.02x = 16,681,748,181.16
  5. Step 5: Solve for x
    x = 16,681,748,181.16/149,074.02
  6. Step 6: Final answer
    x = 111,902.45

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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.