Home / 129,654.34-194,340.80-66,387.67

Finding the Fourth Proportional to 129,654.34, 194,340.80 and 66,387.67

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Solution

The fourth proportional to 129,654.34, 194,340.80 and 66,387.67 is: 99,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,654.34 : 194,340.80 = 66,387.67 : x
  2. Step 2: Convert to fraction form
    129,654.34/194,340.80 = 66,387.67/x
  3. Step 3: Cross multiply
    129,654.34x = 194,340.80 × 66,387.67
  4. Step 4: Simplify right side
    129,654.34x = 12,901,832,578.05
  5. Step 5: Solve for x
    x = 12,901,832,578.05/129,654.34
  6. Step 6: Final answer
    x = 99,509.46

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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.