Home / 100,134.09-138,138.35-57,668.00

Finding the Fourth Proportional to 100,134.09, 138,138.35 and 57,668.00

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Solution

The fourth proportional to 100,134.09, 138,138.35 and 57,668.00 is: 79,554.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,134.09 : 138,138.35 = 57,668.00 : x
  2. Step 2: Convert to fraction form
    100,134.09/138,138.35 = 57,668.00/x
  3. Step 3: Cross multiply
    100,134.09x = 138,138.35 × 57,668.00
  4. Step 4: Simplify right side
    100,134.09x = 7,966,161,388.77
  5. Step 5: Solve for x
    x = 7,966,161,388.77/100,134.09
  6. Step 6: Final answer
    x = 79,554.94

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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.