Home / 100,023.28-150,059.40-70,498.78

Finding the Fourth Proportional to 100,023.28, 150,059.40 and 70,498.78

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Solution

The fourth proportional to 100,023.28, 150,059.40 and 70,498.78 is: 105,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,023.28 : 150,059.40 = 70,498.78 : x
  2. Step 2: Convert to fraction form
    100,023.28/150,059.40 = 70,498.78/x
  3. Step 3: Cross multiply
    100,023.28x = 150,059.40 × 70,498.78
  4. Step 4: Simplify right side
    100,023.28x = 10,579,004,627.53
  5. Step 5: Solve for x
    x = 10,579,004,627.53/100,023.28
  6. Step 6: Final answer
    x = 105,765.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.