Home / 134,976.75-186,267.93-78,391.77

Finding the Fourth Proportional to 134,976.75, 186,267.93 and 78,391.77

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Solution

The fourth proportional to 134,976.75, 186,267.93 and 78,391.77 is: 108,180.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,976.75 : 186,267.93 = 78,391.77 : x
  2. Step 2: Convert to fraction form
    134,976.75/186,267.93 = 78,391.77/x
  3. Step 3: Cross multiply
    134,976.75x = 186,267.93 × 78,391.77
  4. Step 4: Simplify right side
    134,976.75x = 14,601,872,726.94
  5. Step 5: Solve for x
    x = 14,601,872,726.94/134,976.75
  6. Step 6: Final answer
    x = 108,180.65

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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.