Home / 113,194.80-156,226.32-81,468.72

Finding the Fourth Proportional to 113,194.80, 156,226.32 and 81,468.72

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Solution

The fourth proportional to 113,194.80, 156,226.32 and 81,468.72 is: 112,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,194.80 : 156,226.32 = 81,468.72 : x
  2. Step 2: Convert to fraction form
    113,194.80/156,226.32 = 81,468.72/x
  3. Step 3: Cross multiply
    113,194.80x = 156,226.32 × 81,468.72
  4. Step 4: Simplify right side
    113,194.80x = 12,727,558,320.71
  5. Step 5: Solve for x
    x = 12,727,558,320.71/113,194.80
  6. Step 6: Final answer
    x = 112,439.43

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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.