Home / 139,688.28-192,773.92-76,030.20

Finding the Fourth Proportional to 139,688.28, 192,773.92 and 76,030.20

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Solution

The fourth proportional to 139,688.28, 192,773.92 and 76,030.20 is: 104,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,688.28 : 192,773.92 = 76,030.20 : x
  2. Step 2: Convert to fraction form
    139,688.28/192,773.92 = 76,030.20/x
  3. Step 3: Cross multiply
    139,688.28x = 192,773.92 × 76,030.20
  4. Step 4: Simplify right side
    139,688.28x = 14,656,639,692.38
  5. Step 5: Solve for x
    x = 14,656,639,692.38/139,688.28
  6. Step 6: Final answer
    x = 104,923.90

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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.