Home / 84,205.12-126,297.60-65,503.84

Finding the Fourth Proportional to 84,205.12, 126,297.60 and 65,503.84

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Solution

The fourth proportional to 84,205.12, 126,297.60 and 65,503.84 is: 98,247.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,205.12 : 126,297.60 = 65,503.84 : x
  2. Step 2: Convert to fraction form
    84,205.12/126,297.60 = 65,503.84/x
  3. Step 3: Cross multiply
    84,205.12x = 126,297.60 × 65,503.84
  4. Step 4: Simplify right side
    84,205.12x = 8,272,977,782.78
  5. Step 5: Solve for x
    x = 8,272,977,782.78/84,205.12
  6. Step 6: Final answer
    x = 98,247.92

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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.