Home / 149,720.76-206,611.56-81,739.08

Finding the Fourth Proportional to 149,720.76, 206,611.56 and 81,739.08

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Solution

The fourth proportional to 149,720.76, 206,611.56 and 81,739.08 is: 112,798.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,720.76 : 206,611.56 = 81,739.08 : x
  2. Step 2: Convert to fraction form
    149,720.76/206,611.56 = 81,739.08/x
  3. Step 3: Cross multiply
    149,720.76x = 206,611.56 × 81,739.08
  4. Step 4: Simplify right side
    149,720.76x = 16,888,238,831.76
  5. Step 5: Solve for x
    x = 16,888,238,831.76/149,720.76
  6. Step 6: Final answer
    x = 112,798.24

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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.