Home / 118,378.82-163,361.77-64,663.85

Finding the Fourth Proportional to 118,378.82, 163,361.77 and 64,663.85

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Solution

The fourth proportional to 118,378.82, 163,361.77 and 64,663.85 is: 89,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,378.82 : 163,361.77 = 64,663.85 : x
  2. Step 2: Convert to fraction form
    118,378.82/163,361.77 = 64,663.85/x
  3. Step 3: Cross multiply
    118,378.82x = 163,361.77 × 64,663.85
  4. Step 4: Simplify right side
    118,378.82x = 10,563,600,991.01
  5. Step 5: Solve for x
    x = 10,563,600,991.01/118,378.82
  6. Step 6: Final answer
    x = 89,235.57

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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.