Home / 106,525.76-159,636.38-78,223.77

Finding the Fourth Proportional to 106,525.76, 159,636.38 and 78,223.77

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Solution

The fourth proportional to 106,525.76, 159,636.38 and 78,223.77 is: 117,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,525.76 : 159,636.38 = 78,223.77 : x
  2. Step 2: Convert to fraction form
    106,525.76/159,636.38 = 78,223.77/x
  3. Step 3: Cross multiply
    106,525.76x = 159,636.38 × 78,223.77
  4. Step 4: Simplify right side
    106,525.76x = 12,487,359,081.63
  5. Step 5: Solve for x
    x = 12,487,359,081.63/106,525.76
  6. Step 6: Final answer
    x = 117,223.85

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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.