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Finding the Fourth Proportional to 117,489.55, 162,061.68 and 69,709

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Solution

The fourth proportional to 117,489.55, 162,061.68 and 69,709 is: 96,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,489.55 : 162,061.68 = 69,709 : x
  2. Step 2: Convert to fraction form
    117,489.55/162,061.68 = 69,709/x
  3. Step 3: Cross multiply
    117,489.55x = 162,061.68 × 69,709
  4. Step 4: Simplify right side
    117,489.55x = 11,297,157,651.12
  5. Step 5: Solve for x
    x = 11,297,157,651.12/117,489.55
  6. Step 6: Final answer
    x = 96,154.57

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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.