Home / 100,111.14-138,145.50-57,673.08

Finding the Fourth Proportional to 100,111.14, 138,145.50 and 57,673.08

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Solution

The fourth proportional to 100,111.14, 138,145.50 and 57,673.08 is: 79,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.14 : 138,145.50 = 57,673.08 : x
  2. Step 2: Convert to fraction form
    100,111.14/138,145.50 = 57,673.08/x
  3. Step 3: Cross multiply
    100,111.14x = 138,145.50 × 57,673.08
  4. Step 4: Simplify right side
    100,111.14x = 7,967,276,473.14
  5. Step 5: Solve for x
    x = 7,967,276,473.14/100,111.14
  6. Step 6: Final answer
    x = 79,584.31

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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.