Home / 100,281.96-138,392.94-57,268.47

Finding the Fourth Proportional to 100,281.96, 138,392.94 and 57,268.47

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Solution

The fourth proportional to 100,281.96, 138,392.94 and 57,268.47 is: 79,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,281.96 : 138,392.94 = 57,268.47 : x
  2. Step 2: Convert to fraction form
    100,281.96/138,392.94 = 57,268.47/x
  3. Step 3: Cross multiply
    100,281.96x = 138,392.94 × 57,268.47
  4. Step 4: Simplify right side
    100,281.96x = 7,925,551,932.60
  5. Step 5: Solve for x
    x = 7,925,551,932.60/100,281.96
  6. Step 6: Final answer
    x = 79,032.68

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1.5x scale

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.