Home / 138,514.23-191,135.82-84,814.47

Finding the Fourth Proportional to 138,514.23, 191,135.82 and 84,814.47

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Solution

The fourth proportional to 138,514.23, 191,135.82 and 84,814.47 is: 117,035.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,514.23 : 191,135.82 = 84,814.47 : x
  2. Step 2: Convert to fraction form
    138,514.23/191,135.82 = 84,814.47/x
  3. Step 3: Cross multiply
    138,514.23x = 191,135.82 × 84,814.47
  4. Step 4: Simplify right side
    138,514.23x = 16,211,083,271.32
  5. Step 5: Solve for x
    x = 16,211,083,271.32/138,514.23
  6. Step 6: Final answer
    x = 117,035.51

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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.