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Finding the Fourth Proportional to 169,947.80, 255,116.10 and 99,866.60

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Solution

The fourth proportional to 169,947.80, 255,116.10 and 99,866.60 is: 149,914.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,947.80 : 255,116.10 = 99,866.60 : x
  2. Step 2: Convert to fraction form
    169,947.80/255,116.10 = 99,866.60/x
  3. Step 3: Cross multiply
    169,947.80x = 255,116.10 × 99,866.60
  4. Step 4: Simplify right side
    169,947.80x = 25,477,577,512.26
  5. Step 5: Solve for x
    x = 25,477,577,512.26/169,947.80
  6. Step 6: Final answer
    x = 149,914.14

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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.