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Finding the Fourth Proportional to 117,778.50, 162,535.95 and 67,477.50

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Solution

The fourth proportional to 117,778.50, 162,535.95 and 67,477.50 is: 93,119.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,778.50 : 162,535.95 = 67,477.50 : x
  2. Step 2: Convert to fraction form
    117,778.50/162,535.95 = 67,477.50/x
  3. Step 3: Cross multiply
    117,778.50x = 162,535.95 × 67,477.50
  4. Step 4: Simplify right side
    117,778.50x = 10,967,519,566.13
  5. Step 5: Solve for x
    x = 10,967,519,566.13/117,778.50
  6. Step 6: Final answer
    x = 93,119.88

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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.