Home / 85,514.08-128,154.48-52,245.76

Finding the Fourth Proportional to 85,514.08, 128,154.48 and 52,245.76

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Solution

The fourth proportional to 85,514.08, 128,154.48 and 52,245.76 is: 78,297.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,514.08 : 128,154.48 = 52,245.76 : x
  2. Step 2: Convert to fraction form
    85,514.08/128,154.48 = 52,245.76/x
  3. Step 3: Cross multiply
    85,514.08x = 128,154.48 × 52,245.76
  4. Step 4: Simplify right side
    85,514.08x = 6,695,528,205.00
  5. Step 5: Solve for x
    x = 6,695,528,205.00/85,514.08
  6. Step 6: Final answer
    x = 78,297.38

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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.