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Finding the Fourth Proportional to 137,801,411.70, 206,702,117.55 and 40,748,475.30

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Solution

The fourth proportional to 137,801,411.70, 206,702,117.55 and 40,748,475.30 is: 61,122,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,801,411.70 : 206,702,117.55 = 40,748,475.30 : x
  2. Step 2: Convert to fraction form
    137,801,411.70/206,702,117.55 = 40,748,475.30/x
  3. Step 3: Cross multiply
    137,801,411.70x = 206,702,117.55 × 40,748,475.30
  4. Step 4: Simplify right side
    137,801,411.70x = 8,422,796,131,443,871
  5. Step 5: Solve for x
    x = 8,422,796,131,443,871/137,801,411.70
  6. Step 6: Final answer
    x = 61,122,712.95

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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.