Home / 138,429.60-207,352.80-112,185.60

Finding the Fourth Proportional to 138,429.60, 207,352.80 and 112,185.60

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Solution

The fourth proportional to 138,429.60, 207,352.80 and 112,185.60 is: 168,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,429.60 : 207,352.80 = 112,185.60 : x
  2. Step 2: Convert to fraction form
    138,429.60/207,352.80 = 112,185.60/x
  3. Step 3: Cross multiply
    138,429.60x = 207,352.80 × 112,185.60
  4. Step 4: Simplify right side
    138,429.60x = 23,261,998,279.68
  5. Step 5: Solve for x
    x = 23,261,998,279.68/138,429.60
  6. Step 6: Final answer
    x = 168,042.08

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1.5x scale

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.