Home / 138,087.24-190,556.10-77,660.52

Finding the Fourth Proportional to 138,087.24, 190,556.10 and 77,660.52

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Solution

The fourth proportional to 138,087.24, 190,556.10 and 77,660.52 is: 107,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,087.24 : 190,556.10 = 77,660.52 : x
  2. Step 2: Convert to fraction form
    138,087.24/190,556.10 = 77,660.52/x
  3. Step 3: Cross multiply
    138,087.24x = 190,556.10 × 77,660.52
  4. Step 4: Simplify right side
    138,087.24x = 14,798,685,815.17
  5. Step 5: Solve for x
    x = 14,798,685,815.17/138,087.24
  6. Step 6: Final answer
    x = 107,169.10

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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.