Home / 129,945.76-179,268-76,203.52

Finding the Fourth Proportional to 129,945.76, 179,268 and 76,203.52

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Solution

The fourth proportional to 129,945.76, 179,268 and 76,203.52 is: 105,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,945.76 : 179,268 = 76,203.52 : x
  2. Step 2: Convert to fraction form
    129,945.76/179,268 = 76,203.52/x
  3. Step 3: Cross multiply
    129,945.76x = 179,268 × 76,203.52
  4. Step 4: Simplify right side
    129,945.76x = 13,660,852,623.36
  5. Step 5: Solve for x
    x = 13,660,852,623.36/129,945.76
  6. Step 6: Final answer
    x = 105,127.34

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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.