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Finding the Fourth Proportional to 101,969.25, 152,987.60 and 54,573.78

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Solution

The fourth proportional to 101,969.25, 152,987.60 and 54,573.78 is: 81,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,969.25 : 152,987.60 = 54,573.78 : x
  2. Step 2: Convert to fraction form
    101,969.25/152,987.60 = 54,573.78/x
  3. Step 3: Cross multiply
    101,969.25x = 152,987.60 × 54,573.78
  4. Step 4: Simplify right side
    101,969.25x = 8,349,112,335.27
  5. Step 5: Solve for x
    x = 8,349,112,335.27/101,969.25
  6. Step 6: Final answer
    x = 81,878.73

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1.5x scale

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.