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Finding the Fourth Proportional to 176,395.56, 243,429.66 and 99,915

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Solution

The fourth proportional to 176,395.56, 243,429.66 and 99,915 is: 137,884.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,395.56 : 243,429.66 = 99,915 : x
  2. Step 2: Convert to fraction form
    176,395.56/243,429.66 = 99,915/x
  3. Step 3: Cross multiply
    176,395.56x = 243,429.66 × 99,915
  4. Step 4: Simplify right side
    176,395.56x = 24,322,274,478.90
  5. Step 5: Solve for x
    x = 24,322,274,478.90/176,395.56
  6. Step 6: Final answer
    x = 137,884.85

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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.