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Finding the Fourth Proportional to 169,258.80, 253,815.30 and 84,986.40

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Solution

The fourth proportional to 169,258.80, 253,815.30 and 84,986.40 is: 127,443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,258.80 : 253,815.30 = 84,986.40 : x
  2. Step 2: Convert to fraction form
    169,258.80/253,815.30 = 84,986.40/x
  3. Step 3: Cross multiply
    169,258.80x = 253,815.30 × 84,986.40
  4. Step 4: Simplify right side
    169,258.80x = 21,570,848,611.92
  5. Step 5: Solve for x
    x = 21,570,848,611.92/169,258.80
  6. Step 6: Final answer
    x = 127,443.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.