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Finding the Fourth Proportional to 105,745.44, 145,878.40 and 63,295.80

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Solution

The fourth proportional to 105,745.44, 145,878.40 and 63,295.80 is: 87,318.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,745.44 : 145,878.40 = 63,295.80 : x
  2. Step 2: Convert to fraction form
    105,745.44/145,878.40 = 63,295.80/x
  3. Step 3: Cross multiply
    105,745.44x = 145,878.40 × 63,295.80
  4. Step 4: Simplify right side
    105,745.44x = 9,233,490,030.72
  5. Step 5: Solve for x
    x = 9,233,490,030.72/105,745.44
  6. Step 6: Final answer
    x = 87,318.09

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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.