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Finding the Fourth Proportional to 84,856.40, 127,284.60 and 84,856.40

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Solution

The fourth proportional to 84,856.40, 127,284.60 and 84,856.40 is: 127,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,856.40 : 127,284.60 = 84,856.40 : x
  2. Step 2: Convert to fraction form
    84,856.40/127,284.60 = 84,856.40/x
  3. Step 3: Cross multiply
    84,856.40x = 127,284.60 × 84,856.40
  4. Step 4: Simplify right side
    84,856.40x = 10,800,912,931.44
  5. Step 5: Solve for x
    x = 10,800,912,931.44/84,856.40
  6. Step 6: Final answer
    x = 127,284.60

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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.