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Finding the Fourth Proportional to 128,617.47, 192,878.82 and 44,356.01

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Solution

The fourth proportional to 128,617.47, 192,878.82 and 44,356.01 is: 66,517.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,617.47 : 192,878.82 = 44,356.01 : x
  2. Step 2: Convert to fraction form
    128,617.47/192,878.82 = 44,356.01/x
  3. Step 3: Cross multiply
    128,617.47x = 192,878.82 × 44,356.01
  4. Step 4: Simplify right side
    128,617.47x = 8,555,333,904.31
  5. Step 5: Solve for x
    x = 8,555,333,904.31/128,617.47
  6. Step 6: Final answer
    x = 66,517.67

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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.