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Finding the Fourth Proportional to 186,525.20, 279,852.60 and 81,419.60

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Solution

The fourth proportional to 186,525.20, 279,852.60 and 81,419.60 is: 122,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,525.20 : 279,852.60 = 81,419.60 : x
  2. Step 2: Convert to fraction form
    186,525.20/279,852.60 = 81,419.60/x
  3. Step 3: Cross multiply
    186,525.20x = 279,852.60 × 81,419.60
  4. Step 4: Simplify right side
    186,525.20x = 22,785,486,750.96
  5. Step 5: Solve for x
    x = 22,785,486,750.96/186,525.20
  6. Step 6: Final answer
    x = 122,157.69

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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.