Home / 251,869.12-347,577.78-138,691

Finding the Fourth Proportional to 251,869.12, 347,577.78 and 138,691

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Solution

The fourth proportional to 251,869.12, 347,577.78 and 138,691 is: 191,392.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,869.12 : 347,577.78 = 138,691 : x
  2. Step 2: Convert to fraction form
    251,869.12/347,577.78 = 138,691/x
  3. Step 3: Cross multiply
    251,869.12x = 347,577.78 × 138,691
  4. Step 4: Simplify right side
    251,869.12x = 48,205,909,885.98
  5. Step 5: Solve for x
    x = 48,205,909,885.98/251,869.12
  6. Step 6: Final answer
    x = 191,392.70

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Why These Related Problems?

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