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Finding the Fourth Proportional to 123,940.13, 171,051.95 and 73,639.13

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Solution

The fourth proportional to 123,940.13, 171,051.95 and 73,639.13 is: 101,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,940.13 : 171,051.95 = 73,639.13 : x
  2. Step 2: Convert to fraction form
    123,940.13/171,051.95 = 73,639.13/x
  3. Step 3: Cross multiply
    123,940.13x = 171,051.95 × 73,639.13
  4. Step 4: Simplify right side
    123,940.13x = 12,596,116,111.64
  5. Step 5: Solve for x
    x = 12,596,116,111.64/123,940.13
  6. Step 6: Final answer
    x = 101,630.66

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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.