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Finding the Fourth Proportional to 123,192.60, 170,006.20 and 66,604.38

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Solution

The fourth proportional to 123,192.60, 170,006.20 and 66,604.38 is: 91,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,192.60 : 170,006.20 = 66,604.38 : x
  2. Step 2: Convert to fraction form
    123,192.60/170,006.20 = 66,604.38/x
  3. Step 3: Cross multiply
    123,192.60x = 170,006.20 × 66,604.38
  4. Step 4: Simplify right side
    123,192.60x = 11,323,157,547.16
  5. Step 5: Solve for x
    x = 11,323,157,547.16/123,192.60
  6. Step 6: Final answer
    x = 91,914.27

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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.