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Finding the Fourth Proportional to 103,029.60, 154,252.80 and 91,365.60

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Solution

The fourth proportional to 103,029.60, 154,252.80 and 91,365.60 is: 136,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,029.60 : 154,252.80 = 91,365.60 : x
  2. Step 2: Convert to fraction form
    103,029.60/154,252.80 = 91,365.60/x
  3. Step 3: Cross multiply
    103,029.60x = 154,252.80 × 91,365.60
  4. Step 4: Simplify right side
    103,029.60x = 14,093,399,623.68
  5. Step 5: Solve for x
    x = 14,093,399,623.68/103,029.60
  6. Step 6: Final answer
    x = 136,789.81

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1.5x scale

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.