Home / 120,435.31-180,465.32-45,514.56

Finding the Fourth Proportional to 120,435.31, 180,465.32 and 45,514.56

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Solution

The fourth proportional to 120,435.31, 180,465.32 and 45,514.56 is: 68,200.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,435.31 : 180,465.32 = 45,514.56 : x
  2. Step 2: Convert to fraction form
    120,435.31/180,465.32 = 45,514.56/x
  3. Step 3: Cross multiply
    120,435.31x = 180,465.32 × 45,514.56
  4. Step 4: Simplify right side
    120,435.31x = 8,213,799,154.45
  5. Step 5: Solve for x
    x = 8,213,799,154.45/120,435.31
  6. Step 6: Final answer
    x = 68,200.92

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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.