Home / 100,109.24-138,151.14-64,299.56

Finding the Fourth Proportional to 100,109.24, 138,151.14 and 64,299.56

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Solution

The fourth proportional to 100,109.24, 138,151.14 and 64,299.56 is: 88,733.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,109.24 : 138,151.14 = 64,299.56 : x
  2. Step 2: Convert to fraction form
    100,109.24/138,151.14 = 64,299.56/x
  3. Step 3: Cross multiply
    100,109.24x = 138,151.14 × 64,299.56
  4. Step 4: Simplify right side
    100,109.24x = 8,883,057,515.50
  5. Step 5: Solve for x
    x = 8,883,057,515.50/100,109.24
  6. Step 6: Final answer
    x = 88,733.64

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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.