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Finding the Fourth Proportional to 140,101.85, 193,341.18 and 76,440.98

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Solution

The fourth proportional to 140,101.85, 193,341.18 and 76,440.98 is: 105,488.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,101.85 : 193,341.18 = 76,440.98 : x
  2. Step 2: Convert to fraction form
    140,101.85/193,341.18 = 76,440.98/x
  3. Step 3: Cross multiply
    140,101.85x = 193,341.18 × 76,440.98
  4. Step 4: Simplify right side
    140,101.85x = 14,779,188,306.85
  5. Step 5: Solve for x
    x = 14,779,188,306.85/140,101.85
  6. Step 6: Final answer
    x = 105,488.89

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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.