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Finding the Fourth Proportional to 110,018.40, 165,027.60 and 102,645.60

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Solution

The fourth proportional to 110,018.40, 165,027.60 and 102,645.60 is: 153,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,018.40 : 165,027.60 = 102,645.60 : x
  2. Step 2: Convert to fraction form
    110,018.40/165,027.60 = 102,645.60/x
  3. Step 3: Cross multiply
    110,018.40x = 165,027.60 × 102,645.60
  4. Step 4: Simplify right side
    110,018.40x = 16,939,357,018.56
  5. Step 5: Solve for x
    x = 16,939,357,018.56/110,018.40
  6. Step 6: Final answer
    x = 153,968.40

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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.