Home / 216,085.41-298,148.31-130,021.29

Finding the Fourth Proportional to 216,085.41, 298,148.31 and 130,021.29

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Solution

The fourth proportional to 216,085.41, 298,148.31 and 130,021.29 is: 179,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,085.41 : 298,148.31 = 130,021.29 : x
  2. Step 2: Convert to fraction form
    216,085.41/298,148.31 = 130,021.29/x
  3. Step 3: Cross multiply
    216,085.41x = 298,148.31 × 130,021.29
  4. Step 4: Simplify right side
    216,085.41x = 38,765,627,877.52
  5. Step 5: Solve for x
    x = 38,765,627,877.52/216,085.41
  6. Step 6: Final answer
    x = 179,399.56

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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.