Home / 100,081,515-138,111,557.58-56,621,451

Finding the Fourth Proportional to 100,081,515, 138,111,557.58 and 56,621,451

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Solution

The fourth proportional to 100,081,515, 138,111,557.58 and 56,621,451 is: 78,137,074.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,081,515 : 138,111,557.58 = 56,621,451 : x
  2. Step 2: Convert to fraction form
    100,081,515/138,111,557.58 = 56,621,451/x
  3. Step 3: Cross multiply
    100,081,515x = 138,111,557.58 × 56,621,451
  4. Step 4: Simplify right side
    100,081,515x = 7,820,076,790,049,649
  5. Step 5: Solve for x
    x = 7,820,076,790,049,649/100,081,515
  6. Step 6: Final answer
    x = 78,137,074.46

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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.