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Finding the Fourth Proportional to 128,462.88, 192,646.40 and 44,199.44

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Solution

The fourth proportional to 128,462.88, 192,646.40 and 44,199.44 is: 66,282.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,462.88 : 192,646.40 = 44,199.44 : x
  2. Step 2: Convert to fraction form
    128,462.88/192,646.40 = 44,199.44/x
  3. Step 3: Cross multiply
    128,462.88x = 192,646.40 × 44,199.44
  4. Step 4: Simplify right side
    128,462.88x = 8,514,862,998.02
  5. Step 5: Solve for x
    x = 8,514,862,998.02/128,462.88
  6. Step 6: Final answer
    x = 66,282.67

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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.