Home / 101,012.32-139,339.20-63,220.96

Finding the Fourth Proportional to 101,012.32, 139,339.20 and 63,220.96

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Solution

The fourth proportional to 101,012.32, 139,339.20 and 63,220.96 is: 87,208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,012.32 : 139,339.20 = 63,220.96 : x
  2. Step 2: Convert to fraction form
    101,012.32/139,339.20 = 63,220.96/x
  3. Step 3: Cross multiply
    101,012.32x = 139,339.20 × 63,220.96
  4. Step 4: Simplify right side
    101,012.32x = 8,809,157,989.63
  5. Step 5: Solve for x
    x = 8,809,157,989.63/101,012.32
  6. Step 6: Final answer
    x = 87,208.75

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1.5x scale

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.