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Finding the Fourth Proportional to 169,606.41, 254,415.03 and 85,320.51

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Solution

The fourth proportional to 169,606.41, 254,415.03 and 85,320.51 is: 127,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,606.41 : 254,415.03 = 85,320.51 : x
  2. Step 2: Convert to fraction form
    169,606.41/254,415.03 = 85,320.51/x
  3. Step 3: Cross multiply
    169,606.41x = 254,415.03 × 85,320.51
  4. Step 4: Simplify right side
    169,606.41x = 21,706,820,111.27
  5. Step 5: Solve for x
    x = 21,706,820,111.27/169,606.41
  6. Step 6: Final answer
    x = 127,983.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.