Home / 130,190.14-179,653.91-72,819.53

Finding the Fourth Proportional to 130,190.14, 179,653.91 and 72,819.53

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Solution

The fourth proportional to 130,190.14, 179,653.91 and 72,819.53 is: 100,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,190.14 : 179,653.91 = 72,819.53 : x
  2. Step 2: Convert to fraction form
    130,190.14/179,653.91 = 72,819.53/x
  3. Step 3: Cross multiply
    130,190.14x = 179,653.91 × 72,819.53
  4. Step 4: Simplify right side
    130,190.14x = 13,082,313,288.86
  5. Step 5: Solve for x
    x = 13,082,313,288.86/130,190.14
  6. Step 6: Final answer
    x = 100,486.21

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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.