Home / 165,254.78-228,121.36-111,612.45

Finding the Fourth Proportional to 165,254.78, 228,121.36 and 111,612.45

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Solution

The fourth proportional to 165,254.78, 228,121.36 and 111,612.45 is: 154,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,254.78 : 228,121.36 = 111,612.45 : x
  2. Step 2: Convert to fraction form
    165,254.78/228,121.36 = 111,612.45/x
  3. Step 3: Cross multiply
    165,254.78x = 228,121.36 × 111,612.45
  4. Step 4: Simplify right side
    165,254.78x = 25,461,183,886.93
  5. Step 5: Solve for x
    x = 25,461,183,886.93/165,254.78
  6. Step 6: Final answer
    x = 154,072.30

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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.