Home / 139,700.28-192,790.48-76,042.20

Finding the Fourth Proportional to 139,700.28, 192,790.48 and 76,042.20

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Solution

The fourth proportional to 139,700.28, 192,790.48 and 76,042.20 is: 104,940.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,700.28 : 192,790.48 = 76,042.20 : x
  2. Step 2: Convert to fraction form
    139,700.28/192,790.48 = 76,042.20/x
  3. Step 3: Cross multiply
    139,700.28x = 192,790.48 × 76,042.20
  4. Step 4: Simplify right side
    139,700.28x = 14,660,212,238.26
  5. Step 5: Solve for x
    x = 14,660,212,238.26/139,700.28
  6. Step 6: Final answer
    x = 104,940.46

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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.