Home / 107,623.20-161,434.80-28,749.60

Finding the Fourth Proportional to 107,623.20, 161,434.80 and 28,749.60

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Solution

The fourth proportional to 107,623.20, 161,434.80 and 28,749.60 is: 43,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,623.20 : 161,434.80 = 28,749.60 : x
  2. Step 2: Convert to fraction form
    107,623.20/161,434.80 = 28,749.60/x
  3. Step 3: Cross multiply
    107,623.20x = 161,434.80 × 28,749.60
  4. Step 4: Simplify right side
    107,623.20x = 4,641,185,926.08
  5. Step 5: Solve for x
    x = 4,641,185,926.08/107,623.20
  6. Step 6: Final answer
    x = 43,124.40

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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.