Home / 188,129.70-259,618.98-112,678.20

Finding the Fourth Proportional to 188,129.70, 259,618.98 and 112,678.20

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Solution

The fourth proportional to 188,129.70, 259,618.98 and 112,678.20 is: 155,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,129.70 : 259,618.98 = 112,678.20 : x
  2. Step 2: Convert to fraction form
    188,129.70/259,618.98 = 112,678.20/x
  3. Step 3: Cross multiply
    188,129.70x = 259,618.98 × 112,678.20
  4. Step 4: Simplify right side
    188,129.70x = 29,253,399,352.24
  5. Step 5: Solve for x
    x = 29,253,399,352.24/188,129.70
  6. Step 6: Final answer
    x = 155,495.91

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1.5x scale

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.