Home / 100,878,080-139,211,905.92-57,418,016

Finding the Fourth Proportional to 100,878,080, 139,211,905.92 and 57,418,016

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Solution

The fourth proportional to 100,878,080, 139,211,905.92 and 57,418,016 is: 79,236,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,878,080 : 139,211,905.92 = 57,418,016 : x
  2. Step 2: Convert to fraction form
    100,878,080/139,211,905.92 = 57,418,016/x
  3. Step 3: Cross multiply
    100,878,080x = 139,211,905.92 × 57,418,016
  4. Step 4: Simplify right side
    100,878,080x = 7,993,271,441,505,054
  5. Step 5: Solve for x
    x = 7,993,271,441,505,054/100,878,080
  6. Step 6: Final answer
    x = 79,236,950.60

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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.