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Finding the Fourth Proportional to 168,842.40, 253,263.60 and 105,856.80

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Solution

The fourth proportional to 168,842.40, 253,263.60 and 105,856.80 is: 158,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,842.40 : 253,263.60 = 105,856.80 : x
  2. Step 2: Convert to fraction form
    168,842.40/253,263.60 = 105,856.80/x
  3. Step 3: Cross multiply
    168,842.40x = 253,263.60 × 105,856.80
  4. Step 4: Simplify right side
    168,842.40x = 26,809,674,252.48
  5. Step 5: Solve for x
    x = 26,809,674,252.48/168,842.40
  6. Step 6: Final answer
    x = 158,785.20

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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.