Home / 120,387.43-180,482.58-45,465.04

Finding the Fourth Proportional to 120,387.43, 180,482.58 and 45,465.04

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Solution

The fourth proportional to 120,387.43, 180,482.58 and 45,465.04 is: 68,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,387.43 : 180,482.58 = 45,465.04 : x
  2. Step 2: Convert to fraction form
    120,387.43/180,482.58 = 45,465.04/x
  3. Step 3: Cross multiply
    120,387.43x = 180,482.58 × 45,465.04
  4. Step 4: Simplify right side
    120,387.43x = 8,205,647,719.00
  5. Step 5: Solve for x
    x = 8,205,647,719.00/120,387.43
  6. Step 6: Final answer
    x = 68,160.34

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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.