Home / 132,820.40-199,360.20-66,335.60

Finding the Fourth Proportional to 132,820.40, 199,360.20 and 66,335.60

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Solution

The fourth proportional to 132,820.40, 199,360.20 and 66,335.60 is: 99,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,820.40 : 199,360.20 = 66,335.60 : x
  2. Step 2: Convert to fraction form
    132,820.40/199,360.20 = 66,335.60/x
  3. Step 3: Cross multiply
    132,820.40x = 199,360.20 × 66,335.60
  4. Step 4: Simplify right side
    132,820.40x = 13,224,678,483.12
  5. Step 5: Solve for x
    x = 13,224,678,483.12/132,820.40
  6. Step 6: Final answer
    x = 99,568.13

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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.