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Finding the Fourth Proportional to 121,703.40, 182,511.90 and 84,263.40

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Solution

The fourth proportional to 121,703.40, 182,511.90 and 84,263.40 is: 126,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,703.40 : 182,511.90 = 84,263.40 : x
  2. Step 2: Convert to fraction form
    121,703.40/182,511.90 = 84,263.40/x
  3. Step 3: Cross multiply
    121,703.40x = 182,511.90 × 84,263.40
  4. Step 4: Simplify right side
    121,703.40x = 15,379,073,234.46
  5. Step 5: Solve for x
    x = 15,379,073,234.46/121,703.40
  6. Step 6: Final answer
    x = 126,365.19

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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.