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Finding the Fourth Proportional to 144,398.54, 199,278.78 and 80,740.64

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Solution

The fourth proportional to 144,398.54, 199,278.78 and 80,740.64 is: 111,427.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,398.54 : 199,278.78 = 80,740.64 : x
  2. Step 2: Convert to fraction form
    144,398.54/199,278.78 = 80,740.64/x
  3. Step 3: Cross multiply
    144,398.54x = 199,278.78 × 80,740.64
  4. Step 4: Simplify right side
    144,398.54x = 16,089,896,235.62
  5. Step 5: Solve for x
    x = 16,089,896,235.62/144,398.54
  6. Step 6: Final answer
    x = 111,427.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.