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Finding the Fourth Proportional to 132,379.09, 182,684.54 and 71,949.74

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Solution

The fourth proportional to 132,379.09, 182,684.54 and 71,949.74 is: 99,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,379.09 : 182,684.54 = 71,949.74 : x
  2. Step 2: Convert to fraction form
    132,379.09/182,684.54 = 71,949.74/x
  3. Step 3: Cross multiply
    132,379.09x = 182,684.54 × 71,949.74
  4. Step 4: Simplify right side
    132,379.09x = 13,144,104,421.47
  5. Step 5: Solve for x
    x = 13,144,104,421.47/132,379.09
  6. Step 6: Final answer
    x = 99,291.40

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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.