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Finding the Fourth Proportional to 100,081,512, 138,111,553.44 and 56,621,448

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Solution

The fourth proportional to 100,081,512, 138,111,553.44 and 56,621,448 is: 78,137,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,081,512 : 138,111,553.44 = 56,621,448 : x
  2. Step 2: Convert to fraction form
    100,081,512/138,111,553.44 = 56,621,448/x
  3. Step 3: Cross multiply
    100,081,512x = 138,111,553.44 × 56,621,448
  4. Step 4: Simplify right side
    100,081,512x = 7,820,076,141,302,181
  5. Step 5: Solve for x
    x = 7,820,076,141,302,181/100,081,512
  6. Step 6: Final answer
    x = 78,137,070.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.