Home / 135,036.78-186,348.48-74,609.94

Finding the Fourth Proportional to 135,036.78, 186,348.48 and 74,609.94

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Solution

The fourth proportional to 135,036.78, 186,348.48 and 74,609.94 is: 102,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,036.78 : 186,348.48 = 74,609.94 : x
  2. Step 2: Convert to fraction form
    135,036.78/186,348.48 = 74,609.94/x
  3. Step 3: Cross multiply
    135,036.78x = 186,348.48 × 74,609.94
  4. Step 4: Simplify right side
    135,036.78x = 13,903,448,911.89
  5. Step 5: Solve for x
    x = 13,903,448,911.89/135,036.78
  6. Step 6: Final answer
    x = 102,960.46

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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.