Home / 149,048.85-205,685.37-81,064.35

Finding the Fourth Proportional to 149,048.85, 205,685.37 and 81,064.35

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Solution

The fourth proportional to 149,048.85, 205,685.37 and 81,064.35 is: 111,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,048.85 : 205,685.37 = 81,064.35 : x
  2. Step 2: Convert to fraction form
    149,048.85/205,685.37 = 81,064.35/x
  3. Step 3: Cross multiply
    149,048.85x = 205,685.37 × 81,064.35
  4. Step 4: Simplify right side
    149,048.85x = 16,673,750,823.56
  5. Step 5: Solve for x
    x = 16,673,750,823.56/149,048.85
  6. Step 6: Final answer
    x = 111,867.69

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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.