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Finding the Fourth Proportional to 116,772.84, 161,158.41 and 71,480.75

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Solution

The fourth proportional to 116,772.84, 161,158.41 and 71,480.75 is: 98,650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,772.84 : 161,158.41 = 71,480.75 : x
  2. Step 2: Convert to fraction form
    116,772.84/161,158.41 = 71,480.75/x
  3. Step 3: Cross multiply
    116,772.84x = 161,158.41 × 71,480.75
  4. Step 4: Simplify right side
    116,772.84x = 11,519,723,209.82
  5. Step 5: Solve for x
    x = 11,519,723,209.82/116,772.84
  6. Step 6: Final answer
    x = 98,650.71

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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.