Home / 84,081,037.20-126,121,555.80-70,476,147.60

Finding the Fourth Proportional to 84,081,037.20, 126,121,555.80 and 70,476,147.60

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Solution

The fourth proportional to 84,081,037.20, 126,121,555.80 and 70,476,147.60 is: 105,714,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,081,037.20 : 126,121,555.80 = 70,476,147.60 : x
  2. Step 2: Convert to fraction form
    84,081,037.20/126,121,555.80 = 70,476,147.60/x
  3. Step 3: Cross multiply
    84,081,037.20x = 126,121,555.80 × 70,476,147.60
  4. Step 4: Simplify right side
    84,081,037.20x = 8,888,561,382,102,435
  5. Step 5: Solve for x
    x = 8,888,561,382,102,435/84,081,037.20
  6. Step 6: Final answer
    x = 105,714,221.40

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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.