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Finding the Fourth Proportional to 116,871.40, 161,297.40 and 76,619.08

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Solution

The fourth proportional to 116,871.40, 161,297.40 and 76,619.08 is: 105,744.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,871.40 : 161,297.40 = 76,619.08 : x
  2. Step 2: Convert to fraction form
    116,871.40/161,297.40 = 76,619.08/x
  3. Step 3: Cross multiply
    116,871.40x = 161,297.40 × 76,619.08
  4. Step 4: Simplify right side
    116,871.40x = 12,358,458,394.39
  5. Step 5: Solve for x
    x = 12,358,458,394.39/116,871.40
  6. Step 6: Final answer
    x = 105,744.08

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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.