Home / 100,878,100-139,211,933.52-57,418,036

Finding the Fourth Proportional to 100,878,100, 139,211,933.52 and 57,418,036

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Solution

The fourth proportional to 100,878,100, 139,211,933.52 and 57,418,036 is: 79,236,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,878,100 : 139,211,933.52 = 57,418,036 : x
  2. Step 2: Convert to fraction form
    100,878,100/139,211,933.52 = 57,418,036/x
  3. Step 3: Cross multiply
    100,878,100x = 139,211,933.52 × 57,418,036
  4. Step 4: Simplify right side
    100,878,100x = 7,993,275,810,480,967
  5. Step 5: Solve for x
    x = 7,993,275,810,480,967/100,878,100
  6. Step 6: Final answer
    x = 79,236,978.20

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