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Finding the Fourth Proportional to 115,206.60, 161,755.80 and 115,206.60

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Solution

The fourth proportional to 115,206.60, 161,755.80 and 115,206.60 is: 161,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,206.60 : 161,755.80 = 115,206.60 : x
  2. Step 2: Convert to fraction form
    115,206.60/161,755.80 = 115,206.60/x
  3. Step 3: Cross multiply
    115,206.60x = 161,755.80 × 115,206.60
  4. Step 4: Simplify right side
    115,206.60x = 18,635,335,748.28
  5. Step 5: Solve for x
    x = 18,635,335,748.28/115,206.60
  6. Step 6: Final answer
    x = 161,755.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.