Home / 114,905.12-172,378.86-51,726.78

Finding the Fourth Proportional to 114,905.12, 172,378.86 and 51,726.78

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Solution

The fourth proportional to 114,905.12, 172,378.86 and 51,726.78 is: 77,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,905.12 : 172,378.86 = 51,726.78 : x
  2. Step 2: Convert to fraction form
    114,905.12/172,378.86 = 51,726.78/x
  3. Step 3: Cross multiply
    114,905.12x = 172,378.86 × 51,726.78
  4. Step 4: Simplify right side
    114,905.12x = 8,916,603,367.87
  5. Step 5: Solve for x
    x = 8,916,603,367.87/114,905.12
  6. Step 6: Final answer
    x = 77,599.71

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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.