Home / 105,520.44-145,618.62-57,778.22

Finding the Fourth Proportional to 105,520.44, 145,618.62 and 57,778.22

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Solution

The fourth proportional to 105,520.44, 145,618.62 and 57,778.22 is: 79,734.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,520.44 : 145,618.62 = 57,778.22 : x
  2. Step 2: Convert to fraction form
    105,520.44/145,618.62 = 57,778.22/x
  3. Step 3: Cross multiply
    105,520.44x = 145,618.62 × 57,778.22
  4. Step 4: Simplify right side
    105,520.44x = 8,413,584,662.46
  5. Step 5: Solve for x
    x = 8,413,584,662.46/105,520.44
  6. Step 6: Final answer
    x = 79,734.17

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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.