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Finding the Fourth Proportional to 103,569.74, 155,291.74 and 67,572.94

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Solution

The fourth proportional to 103,569.74, 155,291.74 and 67,572.94 is: 101,318.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,569.74 : 155,291.74 = 67,572.94 : x
  2. Step 2: Convert to fraction form
    103,569.74/155,291.74 = 67,572.94/x
  3. Step 3: Cross multiply
    103,569.74x = 155,291.74 × 67,572.94
  4. Step 4: Simplify right side
    103,569.74x = 10,493,518,872.35
  5. Step 5: Solve for x
    x = 10,493,518,872.35/103,569.74
  6. Step 6: Final answer
    x = 101,318.38

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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.