Home / 148,720.20-205,212.21-85,045.70

Finding the Fourth Proportional to 148,720.20, 205,212.21 and 85,045.70

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Solution

The fourth proportional to 148,720.20, 205,212.21 and 85,045.70 is: 117,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,720.20 : 205,212.21 = 85,045.70 : x
  2. Step 2: Convert to fraction form
    148,720.20/205,212.21 = 85,045.70/x
  3. Step 3: Cross multiply
    148,720.20x = 205,212.21 × 85,045.70
  4. Step 4: Simplify right side
    148,720.20x = 17,452,415,021.94
  5. Step 5: Solve for x
    x = 17,452,415,021.94/148,720.20
  6. Step 6: Final answer
    x = 117,350.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.