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Finding the Fourth Proportional to 111,276, 153,560.94 and 60,975

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Solution

The fourth proportional to 111,276, 153,560.94 and 60,975 is: 84,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,276 : 153,560.94 = 60,975 : x
  2. Step 2: Convert to fraction form
    111,276/153,560.94 = 60,975/x
  3. Step 3: Cross multiply
    111,276x = 153,560.94 × 60,975
  4. Step 4: Simplify right side
    111,276x = 9,363,378,316.50
  5. Step 5: Solve for x
    x = 9,363,378,316.50/111,276
  6. Step 6: Final answer
    x = 84,145.53

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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.