Home / 132,630-198,981.45-39,135.75

Finding the Fourth Proportional to 132,630, 198,981.45 and 39,135.75

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Solution

The fourth proportional to 132,630, 198,981.45 and 39,135.75 is: 58,714.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,630 : 198,981.45 = 39,135.75 : x
  2. Step 2: Convert to fraction form
    132,630/198,981.45 = 39,135.75/x
  3. Step 3: Cross multiply
    132,630x = 198,981.45 × 39,135.75
  4. Step 4: Simplify right side
    132,630x = 7,787,288,281.84
  5. Step 5: Solve for x
    x = 7,787,288,281.84/132,630
  6. Step 6: Final answer
    x = 58,714.38

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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.