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Finding the Fourth Proportional to 105,871.44, 146,091.72 and 63,428.88

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Solution

The fourth proportional to 105,871.44, 146,091.72 and 63,428.88 is: 87,525.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,871.44 : 146,091.72 = 63,428.88 : x
  2. Step 2: Convert to fraction form
    105,871.44/146,091.72 = 63,428.88/x
  3. Step 3: Cross multiply
    105,871.44x = 146,091.72 × 63,428.88
  4. Step 4: Simplify right side
    105,871.44x = 9,266,434,176.87
  5. Step 5: Solve for x
    x = 9,266,434,176.87/105,871.44
  6. Step 6: Final answer
    x = 87,525.34

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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.