Home / 100,621,872.46-138,857,349.36-56,569,067.74

Finding the Fourth Proportional to 100,621,872.46, 138,857,349.36 and 56,569,067.74

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Solution

The fourth proportional to 100,621,872.46, 138,857,349.36 and 56,569,067.74 is: 78,064,844.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,872.46 : 138,857,349.36 = 56,569,067.74 : x
  2. Step 2: Convert to fraction form
    100,621,872.46/138,857,349.36 = 56,569,067.74/x
  3. Step 3: Cross multiply
    100,621,872.46x = 138,857,349.36 × 56,569,067.74
  4. Step 4: Simplify right side
    100,621,872.46x = 7,855,030,802,142,687
  5. Step 5: Solve for x
    x = 7,855,030,802,142,687/100,621,872.46
  6. Step 6: Final answer
    x = 78,064,844.25

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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.