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Finding the Fourth Proportional to 125,223.67, 172,813.10 and 89,499.03

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Solution

The fourth proportional to 125,223.67, 172,813.10 and 89,499.03 is: 123,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,223.67 : 172,813.10 = 89,499.03 : x
  2. Step 2: Convert to fraction form
    125,223.67/172,813.10 = 89,499.03/x
  3. Step 3: Cross multiply
    125,223.67x = 172,813.10 × 89,499.03
  4. Step 4: Simplify right side
    125,223.67x = 15,466,603,725.75
  5. Step 5: Solve for x
    x = 15,466,603,725.75/125,223.67
  6. Step 6: Final answer
    x = 123,511.82

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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.