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Finding the Fourth Proportional to 169,331.68, 253,965.16 and 85,068.45

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Solution

The fourth proportional to 169,331.68, 253,965.16 and 85,068.45 is: 127,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,331.68 : 253,965.16 = 85,068.45 : x
  2. Step 2: Convert to fraction form
    169,331.68/253,965.16 = 85,068.45/x
  3. Step 3: Cross multiply
    169,331.68x = 253,965.16 × 85,068.45
  4. Step 4: Simplify right side
    169,331.68x = 21,604,422,302.53
  5. Step 5: Solve for x
    x = 21,604,422,302.53/169,331.68
  6. Step 6: Final answer
    x = 127,586.42

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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.