Home / 100,048,371.30-138,071,067.48-55,394,343

Finding the Fourth Proportional to 100,048,371.30, 138,071,067.48 and 55,394,343

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Solution

The fourth proportional to 100,048,371.30, 138,071,067.48 and 55,394,343 is: 76,446,582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,048,371.30 : 138,071,067.48 = 55,394,343 : x
  2. Step 2: Convert to fraction form
    100,048,371.30/138,071,067.48 = 55,394,343/x
  3. Step 3: Cross multiply
    100,048,371.30x = 138,071,067.48 × 55,394,343
  4. Step 4: Simplify right side
    100,048,371.30x = 7,648,356,070,363,265
  5. Step 5: Solve for x
    x = 7,648,356,070,363,265/100,048,371.30
  6. Step 6: Final answer
    x = 76,446,582.50

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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.