Home / 139,650.32-209,443.92-39,808.36

Finding the Fourth Proportional to 139,650.32, 209,443.92 and 39,808.36

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Solution

The fourth proportional to 139,650.32, 209,443.92 and 39,808.36 is: 59,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,650.32 : 209,443.92 = 39,808.36 : x
  2. Step 2: Convert to fraction form
    139,650.32/209,443.92 = 39,808.36/x
  3. Step 3: Cross multiply
    139,650.32x = 209,443.92 × 39,808.36
  4. Step 4: Simplify right side
    139,650.32x = 8,337,618,967.17
  5. Step 5: Solve for x
    x = 8,337,618,967.17/139,650.32
  6. Step 6: Final answer
    x = 59,703.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.