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Finding the Fourth Proportional to 248,081.76, 342,361.84 and 142,118.24

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Solution

The fourth proportional to 248,081.76, 342,361.84 and 142,118.24 is: 196,128.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,081.76 : 342,361.84 = 142,118.24 : x
  2. Step 2: Convert to fraction form
    248,081.76/342,361.84 = 142,118.24/x
  3. Step 3: Cross multiply
    248,081.76x = 342,361.84 × 142,118.24
  4. Step 4: Simplify right side
    248,081.76x = 48,655,862,143.96
  5. Step 5: Solve for x
    x = 48,655,862,143.96/248,081.76
  6. Step 6: Final answer
    x = 196,128.33

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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.