Home / 129,729.60-194,323.68-67,210.56

Finding the Fourth Proportional to 129,729.60, 194,323.68 and 67,210.56

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Solution

The fourth proportional to 129,729.60, 194,323.68 and 67,210.56 is: 100,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,729.60 : 194,323.68 = 67,210.56 : x
  2. Step 2: Convert to fraction form
    129,729.60/194,323.68 = 67,210.56/x
  3. Step 3: Cross multiply
    129,729.60x = 194,323.68 × 67,210.56
  4. Step 4: Simplify right side
    129,729.60x = 13,060,603,354.06
  5. Step 5: Solve for x
    x = 13,060,603,354.06/129,729.60
  6. Step 6: Final answer
    x = 100,675.58

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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.