Home / 102,719.46-141,771.45-66,465.54

Finding the Fourth Proportional to 102,719.46, 141,771.45 and 66,465.54

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Solution

The fourth proportional to 102,719.46, 141,771.45 and 66,465.54 is: 91,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,719.46 : 141,771.45 = 66,465.54 : x
  2. Step 2: Convert to fraction form
    102,719.46/141,771.45 = 66,465.54/x
  3. Step 3: Cross multiply
    102,719.46x = 141,771.45 × 66,465.54
  4. Step 4: Simplify right side
    102,719.46x = 9,422,915,980.83
  5. Step 5: Solve for x
    x = 9,422,915,980.83/102,719.46
  6. Step 6: Final answer
    x = 91,734.48

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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.