Home / 125,072.54-172,483.49-115,783.86

Finding the Fourth Proportional to 125,072.54, 172,483.49 and 115,783.86

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Solution

The fourth proportional to 125,072.54, 172,483.49 and 115,783.86 is: 159,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,072.54 : 172,483.49 = 115,783.86 : x
  2. Step 2: Convert to fraction form
    125,072.54/172,483.49 = 115,783.86/x
  3. Step 3: Cross multiply
    125,072.54x = 172,483.49 × 115,783.86
  4. Step 4: Simplify right side
    125,072.54x = 19,970,804,258.47
  5. Step 5: Solve for x
    x = 19,970,804,258.47/125,072.54
  6. Step 6: Final answer
    x = 159,673.77

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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.