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Finding the Fourth Proportional to 207,662.48, 286,698.72 and 136,167.20

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Solution

The fourth proportional to 207,662.48, 286,698.72 and 136,167.20 is: 187,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,662.48 : 286,698.72 = 136,167.20 : x
  2. Step 2: Convert to fraction form
    207,662.48/286,698.72 = 136,167.20/x
  3. Step 3: Cross multiply
    207,662.48x = 286,698.72 × 136,167.20
  4. Step 4: Simplify right side
    207,662.48x = 39,038,961,945.98
  5. Step 5: Solve for x
    x = 39,038,961,945.98/207,662.48
  6. Step 6: Final answer
    x = 187,992.37

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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.