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Finding the Fourth Proportional to 107,519.80, 161,085.30 and 91,967.80

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Solution

The fourth proportional to 107,519.80, 161,085.30 and 91,967.80 is: 137,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,519.80 : 161,085.30 = 91,967.80 : x
  2. Step 2: Convert to fraction form
    107,519.80/161,085.30 = 91,967.80/x
  3. Step 3: Cross multiply
    107,519.80x = 161,085.30 × 91,967.80
  4. Step 4: Simplify right side
    107,519.80x = 14,814,660,653.34
  5. Step 5: Solve for x
    x = 14,814,660,653.34/107,519.80
  6. Step 6: Final answer
    x = 137,785.42

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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.