Home / 100,780.03-151,164.55-30,653.88

Finding the Fourth Proportional to 100,780.03, 151,164.55 and 30,653.88

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Solution

The fourth proportional to 100,780.03, 151,164.55 and 30,653.88 is: 45,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,780.03 : 151,164.55 = 30,653.88 : x
  2. Step 2: Convert to fraction form
    100,780.03/151,164.55 = 30,653.88/x
  3. Step 3: Cross multiply
    100,780.03x = 151,164.55 × 30,653.88
  4. Step 4: Simplify right side
    100,780.03x = 4,633,779,975.95
  5. Step 5: Solve for x
    x = 4,633,779,975.95/100,780.03
  6. Step 6: Final answer
    x = 45,979.15

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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.