Home / 132,392.40-198,588.60-76,405.20

Finding the Fourth Proportional to 132,392.40, 198,588.60 and 76,405.20

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Solution

The fourth proportional to 132,392.40, 198,588.60 and 76,405.20 is: 114,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,392.40 : 198,588.60 = 76,405.20 : x
  2. Step 2: Convert to fraction form
    132,392.40/198,588.60 = 76,405.20/x
  3. Step 3: Cross multiply
    132,392.40x = 198,588.60 × 76,405.20
  4. Step 4: Simplify right side
    132,392.40x = 15,173,201,700.72
  5. Step 5: Solve for x
    x = 15,173,201,700.72/132,392.40
  6. Step 6: Final answer
    x = 114,607.80

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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.