Home / 136,918.14-188,944.98-76,489.74

Finding the Fourth Proportional to 136,918.14, 188,944.98 and 76,489.74

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Solution

The fourth proportional to 136,918.14, 188,944.98 and 76,489.74 is: 105,554.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,918.14 : 188,944.98 = 76,489.74 : x
  2. Step 2: Convert to fraction form
    136,918.14/188,944.98 = 76,489.74/x
  3. Step 3: Cross multiply
    136,918.14x = 188,944.98 × 76,489.74
  4. Step 4: Simplify right side
    136,918.14x = 14,452,352,394.51
  5. Step 5: Solve for x
    x = 14,452,352,394.51/136,918.14
  6. Step 6: Final answer
    x = 105,554.69

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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.