Home / 121,945.34-182,879.94-72,012.08

Finding the Fourth Proportional to 121,945.34, 182,879.94 and 72,012.08

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Solution

The fourth proportional to 121,945.34, 182,879.94 and 72,012.08 is: 107,995.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,945.34 : 182,879.94 = 72,012.08 : x
  2. Step 2: Convert to fraction form
    121,945.34/182,879.94 = 72,012.08/x
  3. Step 3: Cross multiply
    121,945.34x = 182,879.94 × 72,012.08
  4. Step 4: Simplify right side
    121,945.34x = 13,169,564,869.68
  5. Step 5: Solve for x
    x = 13,169,564,869.68/121,945.34
  6. Step 6: Final answer
    x = 107,995.64

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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.