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Finding the Fourth Proportional to 202,091,753.80, 303,137,630.70 and 72,719,331.40

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Solution

The fourth proportional to 202,091,753.80, 303,137,630.70 and 72,719,331.40 is: 109,078,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,091,753.80 : 303,137,630.70 = 72,719,331.40 : x
  2. Step 2: Convert to fraction form
    202,091,753.80/303,137,630.70 = 72,719,331.40/x
  3. Step 3: Cross multiply
    202,091,753.80x = 303,137,630.70 × 72,719,331.40
  4. Step 4: Simplify right side
    202,091,753.80x = 22,043,965,826,684,116
  5. Step 5: Solve for x
    x = 22,043,965,826,684,116/202,091,753.80
  6. Step 6: Final answer
    x = 109,078,997.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.