Home / 115,307.55-172,886.79-45,193.95

Finding the Fourth Proportional to 115,307.55, 172,886.79 and 45,193.95

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Solution

The fourth proportional to 115,307.55, 172,886.79 and 45,193.95 is: 67,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,307.55 : 172,886.79 = 45,193.95 : x
  2. Step 2: Convert to fraction form
    115,307.55/172,886.79 = 45,193.95/x
  3. Step 3: Cross multiply
    115,307.55x = 172,886.79 × 45,193.95
  4. Step 4: Simplify right side
    115,307.55x = 7,813,436,942.92
  5. Step 5: Solve for x
    x = 7,813,436,942.92/115,307.55
  6. Step 6: Final answer
    x = 67,761.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.