Home / 100,621,881.08-138,857,361.20-56,569,076.30

Finding the Fourth Proportional to 100,621,881.08, 138,857,361.20 and 56,569,076.30

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Solution

The fourth proportional to 100,621,881.08, 138,857,361.20 and 56,569,076.30 is: 78,064,856.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,881.08 : 138,857,361.20 = 56,569,076.30 : x
  2. Step 2: Convert to fraction form
    100,621,881.08/138,857,361.20 = 56,569,076.30/x
  3. Step 3: Cross multiply
    100,621,881.08x = 138,857,361.20 × 56,569,076.30
  4. Step 4: Simplify right side
    100,621,881.08x = 7,855,032,660,539,458
  5. Step 5: Solve for x
    x = 7,855,032,660,539,458/100,621,881.08
  6. Step 6: Final answer
    x = 78,064,856.04

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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.