Home / 106,590.44-159,733.10-78,288.50

Finding the Fourth Proportional to 106,590.44, 159,733.10 and 78,288.50

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Solution

The fourth proportional to 106,590.44, 159,733.10 and 78,288.50 is: 117,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,590.44 : 159,733.10 = 78,288.50 : x
  2. Step 2: Convert to fraction form
    106,590.44/159,733.10 = 78,288.50/x
  3. Step 3: Cross multiply
    106,590.44x = 159,733.10 × 78,288.50
  4. Step 4: Simplify right side
    106,590.44x = 12,505,264,799.35
  5. Step 5: Solve for x
    x = 12,505,264,799.35/106,590.44
  6. Step 6: Final answer
    x = 117,320.70

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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.