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Finding the Fourth Proportional to 107,516.80, 161,080.80 and 91,964.80

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Solution

The fourth proportional to 107,516.80, 161,080.80 and 91,964.80 is: 137,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,516.80 : 161,080.80 = 91,964.80 : x
  2. Step 2: Convert to fraction form
    107,516.80/161,080.80 = 91,964.80/x
  3. Step 3: Cross multiply
    107,516.80x = 161,080.80 × 91,964.80
  4. Step 4: Simplify right side
    107,516.80x = 14,813,763,555.84
  5. Step 5: Solve for x
    x = 14,813,763,555.84/107,516.80
  6. Step 6: Final answer
    x = 137,780.92

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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.