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Finding the Fourth Proportional to 118,537.76, 163,505.04 and 76,028.96

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Solution

The fourth proportional to 118,537.76, 163,505.04 and 76,028.96 is: 104,870.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,537.76 : 163,505.04 = 76,028.96 : x
  2. Step 2: Convert to fraction form
    118,537.76/163,505.04 = 76,028.96/x
  3. Step 3: Cross multiply
    118,537.76x = 163,505.04 × 76,028.96
  4. Step 4: Simplify right side
    118,537.76x = 12,431,118,145.96
  5. Step 5: Solve for x
    x = 12,431,118,145.96/118,537.76
  6. Step 6: Final answer
    x = 104,870.53

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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.