Home / 150,314.24-207,386.88-100,021.76

Finding the Fourth Proportional to 150,314.24, 207,386.88 and 100,021.76

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Solution

The fourth proportional to 150,314.24, 207,386.88 and 100,021.76 is: 137,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,314.24 : 207,386.88 = 100,021.76 : x
  2. Step 2: Convert to fraction form
    150,314.24/207,386.88 = 100,021.76/x
  3. Step 3: Cross multiply
    150,314.24x = 207,386.88 × 100,021.76
  4. Step 4: Simplify right side
    150,314.24x = 20,743,200,738.51
  5. Step 5: Solve for x
    x = 20,743,200,738.51/150,314.24
  6. Step 6: Final answer
    x = 137,998.91

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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.