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Finding the Fourth Proportional to 169,604.16, 254,411.64 and 85,318.26

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Solution

The fourth proportional to 169,604.16, 254,411.64 and 85,318.26 is: 127,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,604.16 : 254,411.64 = 85,318.26 : x
  2. Step 2: Convert to fraction form
    169,604.16/254,411.64 = 85,318.26/x
  3. Step 3: Cross multiply
    169,604.16x = 254,411.64 × 85,318.26
  4. Step 4: Simplify right side
    169,604.16x = 21,705,958,448.55
  5. Step 5: Solve for x
    x = 21,705,958,448.55/169,604.16
  6. Step 6: Final answer
    x = 127,980.11

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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.