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Finding the Fourth Proportional to 102,828.80, 154,300.80 and 43,654.40

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Solution

The fourth proportional to 102,828.80, 154,300.80 and 43,654.40 is: 65,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,828.80 : 154,300.80 = 43,654.40 : x
  2. Step 2: Convert to fraction form
    102,828.80/154,300.80 = 43,654.40/x
  3. Step 3: Cross multiply
    102,828.80x = 154,300.80 × 43,654.40
  4. Step 4: Simplify right side
    102,828.80x = 6,735,908,843.52
  5. Step 5: Solve for x
    x = 6,735,908,843.52/102,828.80
  6. Step 6: Final answer
    x = 65,506.05

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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.