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Finding the Fourth Proportional to 119,372.95, 164,737.79 and 65,659.38

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Solution

The fourth proportional to 119,372.95, 164,737.79 and 65,659.38 is: 90,611.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,372.95 : 164,737.79 = 65,659.38 : x
  2. Step 2: Convert to fraction form
    119,372.95/164,737.79 = 65,659.38/x
  3. Step 3: Cross multiply
    119,372.95x = 164,737.79 × 65,659.38
  4. Step 4: Simplify right side
    119,372.95x = 10,816,580,001.98
  5. Step 5: Solve for x
    x = 10,816,580,001.98/119,372.95
  6. Step 6: Final answer
    x = 90,611.65

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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.