Home / 236,349-326,162.64-128,921.36

Finding the Fourth Proportional to 236,349, 326,162.64 and 128,921.36

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Solution

The fourth proportional to 236,349, 326,162.64 and 128,921.36 is: 177,912.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,349 : 326,162.64 = 128,921.36 : x
  2. Step 2: Convert to fraction form
    236,349/326,162.64 = 128,921.36/x
  3. Step 3: Cross multiply
    236,349x = 326,162.64 × 128,921.36
  4. Step 4: Simplify right side
    236,349x = 42,049,331,129.99
  5. Step 5: Solve for x
    x = 42,049,331,129.99/236,349
  6. Step 6: Final answer
    x = 177,912.03

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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.