Home / 100,441.09-138,574.37-57,389.69

Finding the Fourth Proportional to 100,441.09, 138,574.37 and 57,389.69

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Solution

The fourth proportional to 100,441.09, 138,574.37 and 57,389.69 is: 79,178.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,441.09 : 138,574.37 = 57,389.69 : x
  2. Step 2: Convert to fraction form
    100,441.09/138,574.37 = 57,389.69/x
  3. Step 3: Cross multiply
    100,441.09x = 138,574.37 × 57,389.69
  4. Step 4: Simplify right side
    100,441.09x = 7,952,740,136.25
  5. Step 5: Solve for x
    x = 7,952,740,136.25/100,441.09
  6. Step 6: Final answer
    x = 79,178.15

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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.