Home / 120,250.83-180,394.70-87,220.29

Finding the Fourth Proportional to 120,250.83, 180,394.70 and 87,220.29

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Solution

The fourth proportional to 120,250.83, 180,394.70 and 87,220.29 is: 130,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,250.83 : 180,394.70 = 87,220.29 : x
  2. Step 2: Convert to fraction form
    120,250.83/180,394.70 = 87,220.29/x
  3. Step 3: Cross multiply
    120,250.83x = 180,394.70 × 87,220.29
  4. Step 4: Simplify right side
    120,250.83x = 15,734,078,288.84
  5. Step 5: Solve for x
    x = 15,734,078,288.84/120,250.83
  6. Step 6: Final answer
    x = 130,843.82

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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.