Home / 139,688.28-192,776.13-82,330.02

Finding the Fourth Proportional to 139,688.28, 192,776.13 and 82,330.02

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Solution

The fourth proportional to 139,688.28, 192,776.13 and 82,330.02 is: 113,619.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,688.28 : 192,776.13 = 82,330.02 : x
  2. Step 2: Convert to fraction form
    139,688.28/192,776.13 = 82,330.02/x
  3. Step 3: Cross multiply
    139,688.28x = 192,776.13 × 82,330.02
  4. Step 4: Simplify right side
    139,688.28x = 15,871,262,638.42
  5. Step 5: Solve for x
    x = 15,871,262,638.42/139,688.28
  6. Step 6: Final answer
    x = 113,619.14

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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.