Home / 129,446,948.40-194,170,422.60-78,652,042.80

Finding the Fourth Proportional to 129,446,948.40, 194,170,422.60 and 78,652,042.80

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Solution

The fourth proportional to 129,446,948.40, 194,170,422.60 and 78,652,042.80 is: 117,978,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,446,948.40 : 194,170,422.60 = 78,652,042.80 : x
  2. Step 2: Convert to fraction form
    129,446,948.40/194,170,422.60 = 78,652,042.80/x
  3. Step 3: Cross multiply
    129,446,948.40x = 194,170,422.60 × 78,652,042.80
  4. Step 4: Simplify right side
    129,446,948.40x = 15,271,900,388,829,286
  5. Step 5: Solve for x
    x = 15,271,900,388,829,286/129,446,948.40
  6. Step 6: Final answer
    x = 117,978,064.20

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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.