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Finding the Fourth Proportional to 123,670, 170,664.62 and 69,953.86

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Solution

The fourth proportional to 123,670, 170,664.62 and 69,953.86 is: 96,536.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670 : 170,664.62 = 69,953.86 : x
  2. Step 2: Convert to fraction form
    123,670/170,664.62 = 69,953.86/x
  3. Step 3: Cross multiply
    123,670x = 170,664.62 × 69,953.86
  4. Step 4: Simplify right side
    123,670x = 11,938,648,934.43
  5. Step 5: Solve for x
    x = 11,938,648,934.43/123,670
  6. Step 6: Final answer
    x = 96,536.34

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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.