Home / 113,422.36-156,260.82-81,536.08

Finding the Fourth Proportional to 113,422.36, 156,260.82 and 81,536.08

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Solution

The fourth proportional to 113,422.36, 156,260.82 and 81,536.08 is: 112,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,422.36 : 156,260.82 = 81,536.08 : x
  2. Step 2: Convert to fraction form
    113,422.36/156,260.82 = 81,536.08/x
  3. Step 3: Cross multiply
    113,422.36x = 156,260.82 × 81,536.08
  4. Step 4: Simplify right side
    113,422.36x = 12,740,894,720.39
  5. Step 5: Solve for x
    x = 12,740,894,720.39/113,422.36
  6. Step 6: Final answer
    x = 112,331.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.