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Finding the Fourth Proportional to 127,410.60, 175,851 and 84,390.60

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Solution

The fourth proportional to 127,410.60, 175,851 and 84,390.60 is: 116,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,410.60 : 175,851 = 84,390.60 : x
  2. Step 2: Convert to fraction form
    127,410.60/175,851 = 84,390.60/x
  3. Step 3: Cross multiply
    127,410.60x = 175,851 × 84,390.60
  4. Step 4: Simplify right side
    127,410.60x = 14,840,171,400.60
  5. Step 5: Solve for x
    x = 14,840,171,400.60/127,410.60
  6. Step 6: Final answer
    x = 116,475.17

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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.