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Finding the Fourth Proportional to 100,840.80, 151,282.80 and 30,727.20

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Solution

The fourth proportional to 100,840.80, 151,282.80 and 30,727.20 is: 46,097.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,840.80 : 151,282.80 = 30,727.20 : x
  2. Step 2: Convert to fraction form
    100,840.80/151,282.80 = 30,727.20/x
  3. Step 3: Cross multiply
    100,840.80x = 151,282.80 × 30,727.20
  4. Step 4: Simplify right side
    100,840.80x = 4,648,496,852.16
  5. Step 5: Solve for x
    x = 4,648,496,852.16/100,840.80
  6. Step 6: Final answer
    x = 46,097.38

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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.