Home / 139,685.28-192,765.30-76,023.12

Finding the Fourth Proportional to 139,685.28, 192,765.30 and 76,023.12

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Solution

The fourth proportional to 139,685.28, 192,765.30 and 76,023.12 is: 104,911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,685.28 : 192,765.30 = 76,023.12 : x
  2. Step 2: Convert to fraction form
    139,685.28/192,765.30 = 76,023.12/x
  3. Step 3: Cross multiply
    139,685.28x = 192,765.30 × 76,023.12
  4. Step 4: Simplify right side
    139,685.28x = 14,654,619,533.74
  5. Step 5: Solve for x
    x = 14,654,619,533.74/139,685.28
  6. Step 6: Final answer
    x = 104,911.70

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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.