Home / 130,190.09-179,653.83-72,819.47

Finding the Fourth Proportional to 130,190.09, 179,653.83 and 72,819.47

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Solution

The fourth proportional to 130,190.09, 179,653.83 and 72,819.47 is: 100,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,190.09 : 179,653.83 = 72,819.47 : x
  2. Step 2: Convert to fraction form
    130,190.09/179,653.83 = 72,819.47/x
  3. Step 3: Cross multiply
    130,190.09x = 179,653.83 × 72,819.47
  4. Step 4: Simplify right side
    130,190.09x = 13,082,295,785.80
  5. Step 5: Solve for x
    x = 13,082,295,785.80/130,190.09
  6. Step 6: Final answer
    x = 100,486.11

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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.