Home / 100,621,879.09-138,857,358.44-56,569,074.30

Finding the Fourth Proportional to 100,621,879.09, 138,857,358.44 and 56,569,074.30

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Solution

The fourth proportional to 100,621,879.09, 138,857,358.44 and 56,569,074.30 is: 78,064,853.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,879.09 : 138,857,358.44 = 56,569,074.30 : x
  2. Step 2: Convert to fraction form
    100,621,879.09/138,857,358.44 = 56,569,074.30/x
  3. Step 3: Cross multiply
    100,621,879.09x = 138,857,358.44 × 56,569,074.30
  4. Step 4: Simplify right side
    100,621,879.09x = 7,855,032,226,835,514
  5. Step 5: Solve for x
    x = 7,855,032,226,835,514/100,621,879.09
  6. Step 6: Final answer
    x = 78,064,853.27

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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.