Home / 149,831.76-206,774.11-86,169.61

Finding the Fourth Proportional to 149,831.76, 206,774.11 and 86,169.61

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Solution

The fourth proportional to 149,831.76, 206,774.11 and 86,169.61 is: 118,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,831.76 : 206,774.11 = 86,169.61 : x
  2. Step 2: Convert to fraction form
    149,831.76/206,774.11 = 86,169.61/x
  3. Step 3: Cross multiply
    149,831.76x = 206,774.11 × 86,169.61
  4. Step 4: Simplify right side
    149,831.76x = 17,817,643,382.93
  5. Step 5: Solve for x
    x = 17,817,643,382.93/149,831.76
  6. Step 6: Final answer
    x = 118,917.67

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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.