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Finding the Fourth Proportional to 210,987.78, 316,536.06 and 76,046.49

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Solution

The fourth proportional to 210,987.78, 316,536.06 and 76,046.49 is: 114,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,987.78 : 316,536.06 = 76,046.49 : x
  2. Step 2: Convert to fraction form
    210,987.78/316,536.06 = 76,046.49/x
  3. Step 3: Cross multiply
    210,987.78x = 316,536.06 × 76,046.49
  4. Step 4: Simplify right side
    210,987.78x = 24,071,456,321.43
  5. Step 5: Solve for x
    x = 24,071,456,321.43/210,987.78
  6. Step 6: Final answer
    x = 114,089.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.