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Finding the Fourth Proportional to 84,775.60, 127,195.80 and 83,447.20

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Solution

The fourth proportional to 84,775.60, 127,195.80 and 83,447.20 is: 125,202.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,775.60 : 127,195.80 = 83,447.20 : x
  2. Step 2: Convert to fraction form
    84,775.60/127,195.80 = 83,447.20/x
  3. Step 3: Cross multiply
    84,775.60x = 127,195.80 × 83,447.20
  4. Step 4: Simplify right side
    84,775.60x = 10,614,133,361.76
  5. Step 5: Solve for x
    x = 10,614,133,361.76/84,775.60
  6. Step 6: Final answer
    x = 125,202.69

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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.