Home / 112,910.85-155,817.81-77,099.94

Finding the Fourth Proportional to 112,910.85, 155,817.81 and 77,099.94

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Solution

The fourth proportional to 112,910.85, 155,817.81 and 77,099.94 is: 106,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,910.85 : 155,817.81 = 77,099.94 : x
  2. Step 2: Convert to fraction form
    112,910.85/155,817.81 = 77,099.94/x
  3. Step 3: Cross multiply
    112,910.85x = 155,817.81 × 77,099.94
  4. Step 4: Simplify right side
    112,910.85x = 12,013,543,801.93
  5. Step 5: Solve for x
    x = 12,013,543,801.93/112,910.85
  6. Step 6: Final answer
    x = 106,398.49

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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.