Home / 149,831.74-206,774.09-86,169.59

Finding the Fourth Proportional to 149,831.74, 206,774.09 and 86,169.59

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Solution

The fourth proportional to 149,831.74, 206,774.09 and 86,169.59 is: 118,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,831.74 : 206,774.09 = 86,169.59 : x
  2. Step 2: Convert to fraction form
    149,831.74/206,774.09 = 86,169.59/x
  3. Step 3: Cross multiply
    149,831.74x = 206,774.09 × 86,169.59
  4. Step 4: Simplify right side
    149,831.74x = 17,817,637,093.20
  5. Step 5: Solve for x
    x = 17,817,637,093.20/149,831.74
  6. Step 6: Final answer
    x = 118,917.64

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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.