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Finding the Fourth Proportional to 103,808.91, 155,713.47 and 28,929.27

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Solution

The fourth proportional to 103,808.91, 155,713.47 and 28,929.27 is: 43,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,808.91 : 155,713.47 = 28,929.27 : x
  2. Step 2: Convert to fraction form
    103,808.91/155,713.47 = 28,929.27/x
  3. Step 3: Cross multiply
    103,808.91x = 155,713.47 × 28,929.27
  4. Step 4: Simplify right side
    103,808.91x = 4,504,677,016.27
  5. Step 5: Solve for x
    x = 4,504,677,016.27/103,808.91
  6. Step 6: Final answer
    x = 43,393.93

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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.