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Finding the Fourth Proportional to 156,389.69, 234,958.44 and 100,339.89

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Solution

The fourth proportional to 156,389.69, 234,958.44 and 100,339.89 is: 150,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,389.69 : 234,958.44 = 100,339.89 : x
  2. Step 2: Convert to fraction form
    156,389.69/234,958.44 = 100,339.89/x
  3. Step 3: Cross multiply
    156,389.69x = 234,958.44 × 100,339.89
  4. Step 4: Simplify right side
    156,389.69x = 23,575,704,024.17
  5. Step 5: Solve for x
    x = 23,575,704,024.17/156,389.69
  6. Step 6: Final answer
    x = 150,749.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.