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Finding the Fourth Proportional to 107,838.80, 161,758.20 and 103,288.40

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Solution

The fourth proportional to 107,838.80, 161,758.20 and 103,288.40 is: 154,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,838.80 : 161,758.20 = 103,288.40 : x
  2. Step 2: Convert to fraction form
    107,838.80/161,758.20 = 103,288.40/x
  3. Step 3: Cross multiply
    107,838.80x = 161,758.20 × 103,288.40
  4. Step 4: Simplify right side
    107,838.80x = 16,707,745,664.88
  5. Step 5: Solve for x
    x = 16,707,745,664.88/107,838.80
  6. Step 6: Final answer
    x = 154,932.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.