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Finding the Fourth Proportional to 115,500.90, 161,307.60 and 115,500.90

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Solution

The fourth proportional to 115,500.90, 161,307.60 and 115,500.90 is: 161,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,500.90 : 161,307.60 = 115,500.90 : x
  2. Step 2: Convert to fraction form
    115,500.90/161,307.60 = 115,500.90/x
  3. Step 3: Cross multiply
    115,500.90x = 161,307.60 × 115,500.90
  4. Step 4: Simplify right side
    115,500.90x = 18,631,172,976.84
  5. Step 5: Solve for x
    x = 18,631,172,976.84/115,500.90
  6. Step 6: Final answer
    x = 161,307.60

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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.