Home / 138,642,837.36-191,333,092.86-76,763,175.48

Finding the Fourth Proportional to 138,642,837.36, 191,333,092.86 and 76,763,175.48

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Solution

The fourth proportional to 138,642,837.36, 191,333,092.86 and 76,763,175.48 is: 105,936,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,642,837.36 : 191,333,092.86 = 76,763,175.48 : x
  2. Step 2: Convert to fraction form
    138,642,837.36/191,333,092.86 = 76,763,175.48/x
  3. Step 3: Cross multiply
    138,642,837.36x = 191,333,092.86 × 76,763,175.48
  4. Step 4: Simplify right side
    138,642,837.36x = 14,687,335,782,343,316
  5. Step 5: Solve for x
    x = 14,687,335,782,343,316/138,642,837.36
  6. Step 6: Final answer
    x = 105,936,491.65

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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.