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Finding the Fourth Proportional to 140,859.70, 194,385.27 and 77,197.35

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Solution

The fourth proportional to 140,859.70, 194,385.27 and 77,197.35 is: 106,531.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,859.70 : 194,385.27 = 77,197.35 : x
  2. Step 2: Convert to fraction form
    140,859.70/194,385.27 = 77,197.35/x
  3. Step 3: Cross multiply
    140,859.70x = 194,385.27 × 77,197.35
  4. Step 4: Simplify right side
    140,859.70x = 15,006,026,751.11
  5. Step 5: Solve for x
    x = 15,006,026,751.11/140,859.70
  6. Step 6: Final answer
    x = 106,531.72

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