Home / 137,979,646.51-190,441,379.51-79,274,680.75

Finding the Fourth Proportional to 137,979,646.51, 190,441,379.51 and 79,274,680.75

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Solution

The fourth proportional to 137,979,646.51, 190,441,379.51 and 79,274,680.75 is: 109,415,989.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,979,646.51 : 190,441,379.51 = 79,274,680.75 : x
  2. Step 2: Convert to fraction form
    137,979,646.51/190,441,379.51 = 79,274,680.75/x
  3. Step 3: Cross multiply
    137,979,646.51x = 190,441,379.51 × 79,274,680.75
  4. Step 4: Simplify right side
    137,979,646.51x = 15,097,179,562,244,840
  5. Step 5: Solve for x
    x = 15,097,179,562,244,840/137,979,646.51
  6. Step 6: Final answer
    x = 109,415,989.56

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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.