Home / 139,284.10-192,212.05-75,621.90

Finding the Fourth Proportional to 139,284.10, 192,212.05 and 75,621.90

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Solution

The fourth proportional to 139,284.10, 192,212.05 and 75,621.90 is: 104,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,284.10 : 192,212.05 = 75,621.90 : x
  2. Step 2: Convert to fraction form
    139,284.10/192,212.05 = 75,621.90/x
  3. Step 3: Cross multiply
    139,284.10x = 192,212.05 × 75,621.90
  4. Step 4: Simplify right side
    139,284.10x = 14,535,440,045.79
  5. Step 5: Solve for x
    x = 14,535,440,045.79/139,284.10
  6. Step 6: Final answer
    x = 104,358.22

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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.