Home / 138,476.74-191,097.66-74,814.34

Finding the Fourth Proportional to 138,476.74, 191,097.66 and 74,814.34

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Solution

The fourth proportional to 138,476.74, 191,097.66 and 74,814.34 is: 103,243.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,476.74 : 191,097.66 = 74,814.34 : x
  2. Step 2: Convert to fraction form
    138,476.74/191,097.66 = 74,814.34/x
  3. Step 3: Cross multiply
    138,476.74x = 191,097.66 × 74,814.34
  4. Step 4: Simplify right side
    138,476.74x = 14,296,845,308.44
  5. Step 5: Solve for x
    x = 14,296,845,308.44/138,476.74
  6. Step 6: Final answer
    x = 103,243.66

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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.