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Finding the Fourth Proportional to 140,287.48, 193,602.36 and 76,627.96

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Solution

The fourth proportional to 140,287.48, 193,602.36 and 76,627.96 is: 105,749.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,287.48 : 193,602.36 = 76,627.96 : x
  2. Step 2: Convert to fraction form
    140,287.48/193,602.36 = 76,627.96/x
  3. Step 3: Cross multiply
    140,287.48x = 193,602.36 × 76,627.96
  4. Step 4: Simplify right side
    140,287.48x = 14,835,353,897.99
  5. Step 5: Solve for x
    x = 14,835,353,897.99/140,287.48
  6. Step 6: Final answer
    x = 105,749.66

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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.