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Finding the Fourth Proportional to 137,993,002.20, 206,989,503.30 and 40,963,685.40

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Solution

The fourth proportional to 137,993,002.20, 206,989,503.30 and 40,963,685.40 is: 61,445,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,993,002.20 : 206,989,503.30 = 40,963,685.40 : x
  2. Step 2: Convert to fraction form
    137,993,002.20/206,989,503.30 = 40,963,685.40/x
  3. Step 3: Cross multiply
    137,993,002.20x = 206,989,503.30 × 40,963,685.40
  4. Step 4: Simplify right side
    137,993,002.20x = 8,479,052,894,283,462
  5. Step 5: Solve for x
    x = 8,479,052,894,283,462/137,993,002.20
  6. Step 6: Final answer
    x = 61,445,528.10

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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.