Home / 100,111.74-138,183.75-57,700.14

Finding the Fourth Proportional to 100,111.74, 138,183.75 and 57,700.14

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Solution

The fourth proportional to 100,111.74, 138,183.75 and 57,700.14 is: 79,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.74 : 138,183.75 = 57,700.14 : x
  2. Step 2: Convert to fraction form
    100,111.74/138,183.75 = 57,700.14/x
  3. Step 3: Cross multiply
    100,111.74x = 138,183.75 × 57,700.14
  4. Step 4: Simplify right side
    100,111.74x = 7,973,221,720.73
  5. Step 5: Solve for x
    x = 7,973,221,720.73/100,111.74
  6. Step 6: Final answer
    x = 79,643.22

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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.