Home / 137,979,645.51-190,441,378.13-79,274,679.75

Finding the Fourth Proportional to 137,979,645.51, 190,441,378.13 and 79,274,679.75

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Solution

The fourth proportional to 137,979,645.51, 190,441,378.13 and 79,274,679.75 is: 109,415,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,979,645.51 : 190,441,378.13 = 79,274,679.75 : x
  2. Step 2: Convert to fraction form
    137,979,645.51/190,441,378.13 = 79,274,679.75/x
  3. Step 3: Cross multiply
    137,979,645.51x = 190,441,378.13 × 79,274,679.75
  4. Step 4: Simplify right side
    137,979,645.51x = 15,097,179,262,008,030
  5. Step 5: Solve for x
    x = 15,097,179,262,008,030/137,979,645.51
  6. Step 6: Final answer
    x = 109,415,988.18

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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.