Home / 120,021.83-180,059.55-45,142.61

Finding the Fourth Proportional to 120,021.83, 180,059.55 and 45,142.61

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Solution

The fourth proportional to 120,021.83, 180,059.55 and 45,142.61 is: 67,724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021.83 : 180,059.55 = 45,142.61 : x
  2. Step 2: Convert to fraction form
    120,021.83/180,059.55 = 45,142.61/x
  3. Step 3: Cross multiply
    120,021.83x = 180,059.55 × 45,142.61
  4. Step 4: Simplify right side
    120,021.83x = 8,128,358,492.57
  5. Step 5: Solve for x
    x = 8,128,358,492.57/120,021.83
  6. Step 6: Final answer
    x = 67,724.00

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1.5x scale

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.