Home / 81,664.01-122,975.67-71,258.16

Finding the Fourth Proportional to 81,664.01, 122,975.67 and 71,258.16

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Solution

The fourth proportional to 81,664.01, 122,975.67 and 71,258.16 is: 107,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664.01 : 122,975.67 = 71,258.16 : x
  2. Step 2: Convert to fraction form
    81,664.01/122,975.67 = 71,258.16/x
  3. Step 3: Cross multiply
    81,664.01x = 122,975.67 × 71,258.16
  4. Step 4: Simplify right side
    81,664.01x = 8,763,020,296.52
  5. Step 5: Solve for x
    x = 8,763,020,296.52/81,664.01
  6. Step 6: Final answer
    x = 107,305.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.