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Finding the Fourth Proportional to 107,049.70, 147,744.31 and 61,718.80

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Solution

The fourth proportional to 107,049.70, 147,744.31 and 61,718.80 is: 85,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,049.70 : 147,744.31 = 61,718.80 : x
  2. Step 2: Convert to fraction form
    107,049.70/147,744.31 = 61,718.80/x
  3. Step 3: Cross multiply
    107,049.70x = 147,744.31 × 61,718.80
  4. Step 4: Simplify right side
    107,049.70x = 9,118,601,520.03
  5. Step 5: Solve for x
    x = 9,118,601,520.03/107,049.70
  6. Step 6: Final answer
    x = 85,181.01

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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.