Home / 115,601.82-173,390.13-78,400.86

Finding the Fourth Proportional to 115,601.82, 173,390.13 and 78,400.86

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Solution

The fourth proportional to 115,601.82, 173,390.13 and 78,400.86 is: 117,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,601.82 : 173,390.13 = 78,400.86 : x
  2. Step 2: Convert to fraction form
    115,601.82/173,390.13 = 78,400.86/x
  3. Step 3: Cross multiply
    115,601.82x = 173,390.13 × 78,400.86
  4. Step 4: Simplify right side
    115,601.82x = 13,593,935,307.51
  5. Step 5: Solve for x
    x = 13,593,935,307.51/115,601.82
  6. Step 6: Final answer
    x = 117,592.74

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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.