Home / 117,429.14-161,971.95-74,968.54

Finding the Fourth Proportional to 117,429.14, 161,971.95 and 74,968.54

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Solution

The fourth proportional to 117,429.14, 161,971.95 and 74,968.54 is: 103,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,429.14 : 161,971.95 = 74,968.54 : x
  2. Step 2: Convert to fraction form
    117,429.14/161,971.95 = 74,968.54/x
  3. Step 3: Cross multiply
    117,429.14x = 161,971.95 × 74,968.54
  4. Step 4: Simplify right side
    117,429.14x = 12,142,800,488.66
  5. Step 5: Solve for x
    x = 12,142,800,488.66/117,429.14
  6. Step 6: Final answer
    x = 103,405.34

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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.