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Finding the Fourth Proportional to 121,528.67, 167,684.52 and 69,835.77

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Solution

The fourth proportional to 121,528.67, 167,684.52 and 69,835.77 is: 96,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,528.67 : 167,684.52 = 69,835.77 : x
  2. Step 2: Convert to fraction form
    121,528.67/167,684.52 = 69,835.77/x
  3. Step 3: Cross multiply
    121,528.67x = 167,684.52 × 69,835.77
  4. Step 4: Simplify right side
    121,528.67x = 11,710,377,571.28
  5. Step 5: Solve for x
    x = 11,710,377,571.28/121,528.67
  6. Step 6: Final answer
    x = 96,358.97

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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.