Home / 211,425.75-291,920.67-136,105.47

Finding the Fourth Proportional to 211,425.75, 291,920.67 and 136,105.47

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Solution

The fourth proportional to 211,425.75, 291,920.67 and 136,105.47 is: 187,924.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,425.75 : 291,920.67 = 136,105.47 : x
  2. Step 2: Convert to fraction form
    211,425.75/291,920.67 = 136,105.47/x
  3. Step 3: Cross multiply
    211,425.75x = 291,920.67 × 136,105.47
  4. Step 4: Simplify right side
    211,425.75x = 39,731,999,993.06
  5. Step 5: Solve for x
    x = 39,731,999,993.06/211,425.75
  6. Step 6: Final answer
    x = 187,924.13

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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.