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Finding the Fourth Proportional to 84,836.40, 127,254.60 and 76,671.60

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Solution

The fourth proportional to 84,836.40, 127,254.60 and 76,671.60 is: 115,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,836.40 : 127,254.60 = 76,671.60 : x
  2. Step 2: Convert to fraction form
    84,836.40/127,254.60 = 76,671.60/x
  3. Step 3: Cross multiply
    84,836.40x = 127,254.60 × 76,671.60
  4. Step 4: Simplify right side
    84,836.40x = 9,756,813,789.36
  5. Step 5: Solve for x
    x = 9,756,813,789.36/84,836.40
  6. Step 6: Final answer
    x = 115,007.40

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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.