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Finding the Fourth Proportional to 117,124.54, 161,629.93 and 63,409.12

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Solution

The fourth proportional to 117,124.54, 161,629.93 and 63,409.12 is: 87,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,124.54 : 161,629.93 = 63,409.12 : x
  2. Step 2: Convert to fraction form
    117,124.54/161,629.93 = 63,409.12/x
  3. Step 3: Cross multiply
    117,124.54x = 161,629.93 × 63,409.12
  4. Step 4: Simplify right side
    117,124.54x = 10,248,811,302.15
  5. Step 5: Solve for x
    x = 10,248,811,302.15/117,124.54
  6. Step 6: Final answer
    x = 87,503.54

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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.