Home / 101,013.32-139,340.58-63,221.96

Finding the Fourth Proportional to 101,013.32, 139,340.58 and 63,221.96

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Solution

The fourth proportional to 101,013.32, 139,340.58 and 63,221.96 is: 87,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,013.32 : 139,340.58 = 63,221.96 : x
  2. Step 2: Convert to fraction form
    101,013.32/139,340.58 = 63,221.96/x
  3. Step 3: Cross multiply
    101,013.32x = 139,340.58 × 63,221.96
  4. Step 4: Simplify right side
    101,013.32x = 8,809,384,575.14
  5. Step 5: Solve for x
    x = 8,809,384,575.14/101,013.32
  6. Step 6: Final answer
    x = 87,210.13

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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.