Home / 121,919,999.44-168,206,164.56-72,322,382.40

Finding the Fourth Proportional to 121,919,999.44, 168,206,164.56 and 72,322,382.40

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Solution

The fourth proportional to 121,919,999.44, 168,206,164.56 and 72,322,382.40 is: 99,779,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,919,999.44 : 168,206,164.56 = 72,322,382.40 : x
  2. Step 2: Convert to fraction form
    121,919,999.44/168,206,164.56 = 72,322,382.40/x
  3. Step 3: Cross multiply
    121,919,999.44x = 168,206,164.56 × 72,322,382.40
  4. Step 4: Simplify right side
    121,919,999.44x = 12,165,070,555,345,648
  5. Step 5: Solve for x
    x = 12,165,070,555,345,648/121,919,999.44
  6. Step 6: Final answer
    x = 99,779,122.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.