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Finding the Fourth Proportional to 169,999.05, 255,054.02 and 81,259.50

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Solution

The fourth proportional to 169,999.05, 255,054.02 and 81,259.50 is: 121,915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,999.05 : 255,054.02 = 81,259.50 : x
  2. Step 2: Convert to fraction form
    169,999.05/255,054.02 = 81,259.50/x
  3. Step 3: Cross multiply
    169,999.05x = 255,054.02 × 81,259.50
  4. Step 4: Simplify right side
    169,999.05x = 20,725,562,688.35
  5. Step 5: Solve for x
    x = 20,725,562,688.35/169,999.05
  6. Step 6: Final answer
    x = 121,915.75

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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.