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Finding the Fourth Proportional to 123,673.76, 170,669.78 and 69,957.62

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Solution

The fourth proportional to 123,673.76, 170,669.78 and 69,957.62 is: 96,541.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,673.76 : 170,669.78 = 69,957.62 : x
  2. Step 2: Convert to fraction form
    123,673.76/170,669.78 = 69,957.62/x
  3. Step 3: Cross multiply
    123,673.76x = 170,669.78 × 69,957.62
  4. Step 4: Simplify right side
    123,673.76x = 11,939,651,614.72
  5. Step 5: Solve for x
    x = 11,939,651,614.72/123,673.76
  6. Step 6: Final answer
    x = 96,541.51

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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.