Home / 138,568.86-191,225.18-74,906.67

Finding the Fourth Proportional to 138,568.86, 191,225.18 and 74,906.67

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Solution

The fourth proportional to 138,568.86, 191,225.18 and 74,906.67 is: 103,371.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,568.86 : 191,225.18 = 74,906.67 : x
  2. Step 2: Convert to fraction form
    138,568.86/191,225.18 = 74,906.67/x
  3. Step 3: Cross multiply
    138,568.86x = 191,225.18 × 74,906.67
  4. Step 4: Simplify right side
    138,568.86x = 14,324,041,079.42
  5. Step 5: Solve for x
    x = 14,324,041,079.42/138,568.86
  6. Step 6: Final answer
    x = 103,371.28

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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.