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Finding the Fourth Proportional to 117,737.19, 162,905.18 and 102,661.27

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Solution

The fourth proportional to 117,737.19, 162,905.18 and 102,661.27 is: 142,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,737.19 : 162,905.18 = 102,661.27 : x
  2. Step 2: Convert to fraction form
    117,737.19/162,905.18 = 102,661.27/x
  3. Step 3: Cross multiply
    117,737.19x = 162,905.18 × 102,661.27
  4. Step 4: Simplify right side
    117,737.19x = 16,724,051,340.55
  5. Step 5: Solve for x
    x = 16,724,051,340.55/117,737.19
  6. Step 6: Final answer
    x = 142,045.61

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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.