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Finding the Fourth Proportional to 158,879.16, 219,258.36 and 91,811.16

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Solution

The fourth proportional to 158,879.16, 219,258.36 and 91,811.16 is: 126,702.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,879.16 : 219,258.36 = 91,811.16 : x
  2. Step 2: Convert to fraction form
    158,879.16/219,258.36 = 91,811.16/x
  3. Step 3: Cross multiply
    158,879.16x = 219,258.36 × 91,811.16
  4. Step 4: Simplify right side
    158,879.16x = 20,130,364,371.30
  5. Step 5: Solve for x
    x = 20,130,364,371.30/158,879.16
  6. Step 6: Final answer
    x = 126,702.36

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1.5x scale

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.