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Finding the Fourth Proportional to 169,751.36, 254,620.56 and 57,440

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Solution

The fourth proportional to 169,751.36, 254,620.56 and 57,440 is: 86,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,751.36 : 254,620.56 = 57,440 : x
  2. Step 2: Convert to fraction form
    169,751.36/254,620.56 = 57,440/x
  3. Step 3: Cross multiply
    169,751.36x = 254,620.56 × 57,440
  4. Step 4: Simplify right side
    169,751.36x = 14,625,404,966.40
  5. Step 5: Solve for x
    x = 14,625,404,966.40/169,751.36
  6. Step 6: Final answer
    x = 86,157.81

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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.