Home / 129,897.20-194,748.60-70,799.60

Finding the Fourth Proportional to 129,897.20, 194,748.60 and 70,799.60

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Solution

The fourth proportional to 129,897.20, 194,748.60 and 70,799.60 is: 106,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,897.20 : 194,748.60 = 70,799.60 : x
  2. Step 2: Convert to fraction form
    129,897.20/194,748.60 = 70,799.60/x
  3. Step 3: Cross multiply
    129,897.20x = 194,748.60 × 70,799.60
  4. Step 4: Simplify right side
    129,897.20x = 13,788,122,980.56
  5. Step 5: Solve for x
    x = 13,788,122,980.56/129,897.20
  6. Step 6: Final answer
    x = 106,146.42

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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.