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Finding the Fourth Proportional to 139,026.80, 191,857.24 and 75,364.40

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Solution

The fourth proportional to 139,026.80, 191,857.24 and 75,364.40 is: 104,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,026.80 : 191,857.24 = 75,364.40 : x
  2. Step 2: Convert to fraction form
    139,026.80/191,857.24 = 75,364.40/x
  3. Step 3: Cross multiply
    139,026.80x = 191,857.24 × 75,364.40
  4. Step 4: Simplify right side
    139,026.80x = 14,459,205,778.26
  5. Step 5: Solve for x
    x = 14,459,205,778.26/139,026.80
  6. Step 6: Final answer
    x = 104,003.01

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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.