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Finding the Fourth Proportional to 158,831.75, 219,187.82 and 91,763.75

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Solution

The fourth proportional to 158,831.75, 219,187.82 and 91,763.75 is: 126,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,831.75 : 219,187.82 = 91,763.75 : x
  2. Step 2: Convert to fraction form
    158,831.75/219,187.82 = 91,763.75/x
  3. Step 3: Cross multiply
    158,831.75x = 219,187.82 × 91,763.75
  4. Step 4: Simplify right side
    158,831.75x = 20,113,495,858.71
  5. Step 5: Solve for x
    x = 20,113,495,858.71/158,831.75
  6. Step 6: Final answer
    x = 126,633.98

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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.