Home / 132,218,968.80-198,328,453.20-78,471,256.80

Finding the Fourth Proportional to 132,218,968.80, 198,328,453.20 and 78,471,256.80

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Solution

The fourth proportional to 132,218,968.80, 198,328,453.20 and 78,471,256.80 is: 117,706,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,218,968.80 : 198,328,453.20 = 78,471,256.80 : x
  2. Step 2: Convert to fraction form
    132,218,968.80/198,328,453.20 = 78,471,256.80/x
  3. Step 3: Cross multiply
    132,218,968.80x = 198,328,453.20 × 78,471,256.80
  4. Step 4: Simplify right side
    132,218,968.80x = 15,563,082,981,803,980
  5. Step 5: Solve for x
    x = 15,563,082,981,803,980/132,218,968.80
  6. Step 6: Final answer
    x = 117,706,885.20

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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.