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Finding the Fourth Proportional to 207,646.45, 286,554.77 and 122,762.77

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Solution

The fourth proportional to 207,646.45, 286,554.77 and 122,762.77 is: 169,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,646.45 : 286,554.77 = 122,762.77 : x
  2. Step 2: Convert to fraction form
    207,646.45/286,554.77 = 122,762.77/x
  3. Step 3: Cross multiply
    207,646.45x = 286,554.77 × 122,762.77
  4. Step 4: Simplify right side
    207,646.45x = 35,178,257,321.91
  5. Step 5: Solve for x
    x = 35,178,257,321.91/207,646.45
  6. Step 6: Final answer
    x = 169,414.20

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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.