Home / 135,359.72-186,714.69-86,945.35

Finding the Fourth Proportional to 135,359.72, 186,714.69 and 86,945.35

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Solution

The fourth proportional to 135,359.72, 186,714.69 and 86,945.35 is: 119,932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,359.72 : 186,714.69 = 86,945.35 : x
  2. Step 2: Convert to fraction form
    135,359.72/186,714.69 = 86,945.35/x
  3. Step 3: Cross multiply
    135,359.72x = 186,714.69 × 86,945.35
  4. Step 4: Simplify right side
    135,359.72x = 16,233,974,072.19
  5. Step 5: Solve for x
    x = 16,233,974,072.19/135,359.72
  6. Step 6: Final answer
    x = 119,932.09

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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.