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Finding the Fourth Proportional to 92,836.98, 128,170.89 and 87,523.38

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Solution

The fourth proportional to 92,836.98, 128,170.89 and 87,523.38 is: 120,834.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,836.98 : 128,170.89 = 87,523.38 : x
  2. Step 2: Convert to fraction form
    92,836.98/128,170.89 = 87,523.38/x
  3. Step 3: Cross multiply
    92,836.98x = 128,170.89 × 87,523.38
  4. Step 4: Simplify right side
    92,836.98x = 11,217,949,510.41
  5. Step 5: Solve for x
    x = 11,217,949,510.41/92,836.98
  6. Step 6: Final answer
    x = 120,834.92

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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.