Home / 125,812.32-173,663.68-78,093.60

Finding the Fourth Proportional to 125,812.32, 173,663.68 and 78,093.60

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Solution

The fourth proportional to 125,812.32, 173,663.68 and 78,093.60 is: 107,795.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,812.32 : 173,663.68 = 78,093.60 : x
  2. Step 2: Convert to fraction form
    125,812.32/173,663.68 = 78,093.60/x
  3. Step 3: Cross multiply
    125,812.32x = 173,663.68 × 78,093.60
  4. Step 4: Simplify right side
    125,812.32x = 13,562,021,960.45
  5. Step 5: Solve for x
    x = 13,562,021,960.45/125,812.32
  6. Step 6: Final answer
    x = 107,795.66

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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.