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Finding the Fourth Proportional to 125,628.80, 173,289.92 and 82,613.21

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Solution

The fourth proportional to 125,628.80, 173,289.92 and 82,613.21 is: 113,955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,628.80 : 173,289.92 = 82,613.21 : x
  2. Step 2: Convert to fraction form
    125,628.80/173,289.92 = 82,613.21/x
  3. Step 3: Cross multiply
    125,628.80x = 173,289.92 × 82,613.21
  4. Step 4: Simplify right side
    125,628.80x = 14,316,035,272.33
  5. Step 5: Solve for x
    x = 14,316,035,272.33/125,628.80
  6. Step 6: Final answer
    x = 113,955.05

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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.