Home / 183,712.78-253,521.48-103,138.30

Finding the Fourth Proportional to 183,712.78, 253,521.48 and 103,138.30

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Solution

The fourth proportional to 183,712.78, 253,521.48 and 103,138.30 is: 142,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,712.78 : 253,521.48 = 103,138.30 : x
  2. Step 2: Convert to fraction form
    183,712.78/253,521.48 = 103,138.30/x
  3. Step 3: Cross multiply
    183,712.78x = 253,521.48 × 103,138.30
  4. Step 4: Simplify right side
    183,712.78x = 26,147,774,460.68
  5. Step 5: Solve for x
    x = 26,147,774,460.68/183,712.78
  6. Step 6: Final answer
    x = 142,329.64

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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.