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Finding the Fourth Proportional to 102,409.60, 153,614.40 and 28,537.60

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Solution

The fourth proportional to 102,409.60, 153,614.40 and 28,537.60 is: 42,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,409.60 : 153,614.40 = 28,537.60 : x
  2. Step 2: Convert to fraction form
    102,409.60/153,614.40 = 28,537.60/x
  3. Step 3: Cross multiply
    102,409.60x = 153,614.40 × 28,537.60
  4. Step 4: Simplify right side
    102,409.60x = 4,383,786,301.44
  5. Step 5: Solve for x
    x = 4,383,786,301.44/102,409.60
  6. Step 6: Final answer
    x = 42,806.40

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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.