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Finding the Fourth Proportional to 81,275.60, 113,863.60 and 81,275.60

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Solution

The fourth proportional to 81,275.60, 113,863.60 and 81,275.60 is: 113,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,275.60 : 113,863.60 = 81,275.60 : x
  2. Step 2: Convert to fraction form
    81,275.60/113,863.60 = 81,275.60/x
  3. Step 3: Cross multiply
    81,275.60x = 113,863.60 × 81,275.60
  4. Step 4: Simplify right side
    81,275.60x = 9,254,332,408.16
  5. Step 5: Solve for x
    x = 9,254,332,408.16/81,275.60
  6. Step 6: Final answer
    x = 113,863.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.