Home / 147,850.20-221,775.30-85,447.80

Finding the Fourth Proportional to 147,850.20, 221,775.30 and 85,447.80

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Solution

The fourth proportional to 147,850.20, 221,775.30 and 85,447.80 is: 128,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,850.20 : 221,775.30 = 85,447.80 : x
  2. Step 2: Convert to fraction form
    147,850.20/221,775.30 = 85,447.80/x
  3. Step 3: Cross multiply
    147,850.20x = 221,775.30 × 85,447.80
  4. Step 4: Simplify right side
    147,850.20x = 18,950,211,479.34
  5. Step 5: Solve for x
    x = 18,950,211,479.34/147,850.20
  6. Step 6: Final answer
    x = 128,171.70

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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.