Home / 149,130.87-205,797.55-81,149.19

Finding the Fourth Proportional to 149,130.87, 205,797.55 and 81,149.19

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Solution

The fourth proportional to 149,130.87, 205,797.55 and 81,149.19 is: 111,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,130.87 : 205,797.55 = 81,149.19 : x
  2. Step 2: Convert to fraction form
    149,130.87/205,797.55 = 81,149.19/x
  3. Step 3: Cross multiply
    149,130.87x = 205,797.55 × 81,149.19
  4. Step 4: Simplify right side
    149,130.87x = 16,700,304,486.48
  5. Step 5: Solve for x
    x = 16,700,304,486.48/149,130.87
  6. Step 6: Final answer
    x = 111,984.22

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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.