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Finding the Fourth Proportional to 132,484, 182,830.80 and 72,868

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Solution

The fourth proportional to 132,484, 182,830.80 and 72,868 is: 100,559.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,484 : 182,830.80 = 72,868 : x
  2. Step 2: Convert to fraction form
    132,484/182,830.80 = 72,868/x
  3. Step 3: Cross multiply
    132,484x = 182,830.80 × 72,868
  4. Step 4: Simplify right side
    132,484x = 13,322,514,734.40
  5. Step 5: Solve for x
    x = 13,322,514,734.40/132,484
  6. Step 6: Final answer
    x = 100,559.42

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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.