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Finding the Fourth Proportional to 138,860.04, 191,627.04 and 75,197.96

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Solution

The fourth proportional to 138,860.04, 191,627.04 and 75,197.96 is: 103,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,860.04 : 191,627.04 = 75,197.96 : x
  2. Step 2: Convert to fraction form
    138,860.04/191,627.04 = 75,197.96/x
  3. Step 3: Cross multiply
    138,860.04x = 191,627.04 × 75,197.96
  4. Step 4: Simplify right side
    138,860.04x = 14,409,962,488.84
  5. Step 5: Solve for x
    x = 14,409,962,488.84/138,860.04
  6. Step 6: Final answer
    x = 103,773.28

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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.