Home / 130,403.05-179,928.54-76,668.46

Finding the Fourth Proportional to 130,403.05, 179,928.54 and 76,668.46

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Solution

The fourth proportional to 130,403.05, 179,928.54 and 76,668.46 is: 105,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,403.05 : 179,928.54 = 76,668.46 : x
  2. Step 2: Convert to fraction form
    130,403.05/179,928.54 = 76,668.46/x
  3. Step 3: Cross multiply
    130,403.05x = 179,928.54 × 76,668.46
  4. Step 4: Simplify right side
    130,403.05x = 13,794,843,622.03
  5. Step 5: Solve for x
    x = 13,794,843,622.03/130,403.05
  6. Step 6: Final answer
    x = 105,786.21

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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.