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Finding the Fourth Proportional to 123,203.64, 170,020.98 and 69,488.54

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Solution

The fourth proportional to 123,203.64, 170,020.98 and 69,488.54 is: 95,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,203.64 : 170,020.98 = 69,488.54 : x
  2. Step 2: Convert to fraction form
    123,203.64/170,020.98 = 69,488.54/x
  3. Step 3: Cross multiply
    123,203.64x = 170,020.98 × 69,488.54
  4. Step 4: Simplify right side
    123,203.64x = 11,814,509,669.57
  5. Step 5: Solve for x
    x = 11,814,509,669.57/123,203.64
  6. Step 6: Final answer
    x = 95,894.16

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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.