Home / 120,501.20-180,780.60-58,120.40

Finding the Fourth Proportional to 120,501.20, 180,780.60 and 58,120.40

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Solution

The fourth proportional to 120,501.20, 180,780.60 and 58,120.40 is: 87,194.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,501.20 : 180,780.60 = 58,120.40 : x
  2. Step 2: Convert to fraction form
    120,501.20/180,780.60 = 58,120.40/x
  3. Step 3: Cross multiply
    120,501.20x = 180,780.60 × 58,120.40
  4. Step 4: Simplify right side
    120,501.20x = 10,507,040,784.24
  5. Step 5: Solve for x
    x = 10,507,040,784.24/120,501.20
  6. Step 6: Final answer
    x = 87,194.49

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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.