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Finding the Fourth Proportional to 123,673.88, 170,480.58 and 75,838.52

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Solution

The fourth proportional to 123,673.88, 170,480.58 and 75,838.52 is: 104,541.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,673.88 : 170,480.58 = 75,838.52 : x
  2. Step 2: Convert to fraction form
    123,673.88/170,480.58 = 75,838.52/x
  3. Step 3: Cross multiply
    123,673.88x = 170,480.58 × 75,838.52
  4. Step 4: Simplify right side
    123,673.88x = 12,928,994,875.94
  5. Step 5: Solve for x
    x = 12,928,994,875.94/123,673.88
  6. Step 6: Final answer
    x = 104,541.03

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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.