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Finding the Fourth Proportional to 103,624.86, 155,212.65 and 64,191.90

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Solution

The fourth proportional to 103,624.86, 155,212.65 and 64,191.90 is: 96,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.86 : 155,212.65 = 64,191.90 : x
  2. Step 2: Convert to fraction form
    103,624.86/155,212.65 = 64,191.90/x
  3. Step 3: Cross multiply
    103,624.86x = 155,212.65 × 64,191.90
  4. Step 4: Simplify right side
    103,624.86x = 9,963,394,907.54
  5. Step 5: Solve for x
    x = 9,963,394,907.54/103,624.86
  6. Step 6: Final answer
    x = 96,148.69

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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.