Home / 100,783.26-151,169.31-30,657.06

Finding the Fourth Proportional to 100,783.26, 151,169.31 and 30,657.06

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Solution

The fourth proportional to 100,783.26, 151,169.31 and 30,657.06 is: 45,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,783.26 : 151,169.31 = 30,657.06 : x
  2. Step 2: Convert to fraction form
    100,783.26/151,169.31 = 30,657.06/x
  3. Step 3: Cross multiply
    100,783.26x = 151,169.31 × 30,657.06
  4. Step 4: Simplify right side
    100,783.26x = 4,634,406,606.83
  5. Step 5: Solve for x
    x = 4,634,406,606.83/100,783.26
  6. Step 6: Final answer
    x = 45,983.89

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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.