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Finding the Fourth Proportional to 207,137.51, 310,713.14 and 57,379.31

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Solution

The fourth proportional to 207,137.51, 310,713.14 and 57,379.31 is: 86,070.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,137.51 : 310,713.14 = 57,379.31 : x
  2. Step 2: Convert to fraction form
    207,137.51/310,713.14 = 57,379.31/x
  3. Step 3: Cross multiply
    207,137.51x = 310,713.14 × 57,379.31
  4. Step 4: Simplify right side
    207,137.51x = 17,828,504,171.02
  5. Step 5: Solve for x
    x = 17,828,504,171.02/207,137.51
  6. Step 6: Final answer
    x = 86,070.86

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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.