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Finding the Fourth Proportional to 176,616.42, 243,720.81 and 101,169.78

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Solution

The fourth proportional to 176,616.42, 243,720.81 and 101,169.78 is: 139,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,616.42 : 243,720.81 = 101,169.78 : x
  2. Step 2: Convert to fraction form
    176,616.42/243,720.81 = 101,169.78/x
  3. Step 3: Cross multiply
    176,616.42x = 243,720.81 × 101,169.78
  4. Step 4: Simplify right side
    176,616.42x = 24,657,180,729.12
  5. Step 5: Solve for x
    x = 24,657,180,729.12/176,616.42
  6. Step 6: Final answer
    x = 139,608.65

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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.