Home / 134,217.20-201,455.40-81,729.20

Finding the Fourth Proportional to 134,217.20, 201,455.40 and 81,729.20

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Solution

The fourth proportional to 134,217.20, 201,455.40 and 81,729.20 is: 122,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,217.20 : 201,455.40 = 81,729.20 : x
  2. Step 2: Convert to fraction form
    134,217.20/201,455.40 = 81,729.20/x
  3. Step 3: Cross multiply
    134,217.20x = 201,455.40 × 81,729.20
  4. Step 4: Simplify right side
    134,217.20x = 16,464,788,677.68
  5. Step 5: Solve for x
    x = 16,464,788,677.68/134,217.20
  6. Step 6: Final answer
    x = 122,672.72

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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.