Home / 137,638.18-189,831.12-113,723.33

Finding the Fourth Proportional to 137,638.18, 189,831.12 and 113,723.33

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Solution

The fourth proportional to 137,638.18, 189,831.12 and 113,723.33 is: 156,847.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,638.18 : 189,831.12 = 113,723.33 : x
  2. Step 2: Convert to fraction form
    137,638.18/189,831.12 = 113,723.33/x
  3. Step 3: Cross multiply
    137,638.18x = 189,831.12 × 113,723.33
  4. Step 4: Simplify right side
    137,638.18x = 21,588,227,152.14
  5. Step 5: Solve for x
    x = 21,588,227,152.14/137,638.18
  6. Step 6: Final answer
    x = 156,847.67

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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.