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Finding the Fourth Proportional to 125,489,872.89, 188,192,490.89 and 47,748,321.45

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Solution

The fourth proportional to 125,489,872.89, 188,192,490.89 and 47,748,321.45 is: 71,606,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,489,872.89 : 188,192,490.89 = 47,748,321.45 : x
  2. Step 2: Convert to fraction form
    125,489,872.89/188,192,490.89 = 47,748,321.45/x
  3. Step 3: Cross multiply
    125,489,872.89x = 188,192,490.89 × 47,748,321.45
  4. Step 4: Simplify right side
    125,489,872.89x = 8,985,875,549,253,175
  5. Step 5: Solve for x
    x = 8,985,875,549,253,175/125,489,872.89
  6. Step 6: Final answer
    x = 71,606,380.20

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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.