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Finding the Fourth Proportional to 117,137.81, 175,706.72 and 28,391.32

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Solution

The fourth proportional to 117,137.81, 175,706.72 and 28,391.32 is: 42,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,137.81 : 175,706.72 = 28,391.32 : x
  2. Step 2: Convert to fraction form
    117,137.81/175,706.72 = 28,391.32/x
  3. Step 3: Cross multiply
    117,137.81x = 175,706.72 × 28,391.32
  4. Step 4: Simplify right side
    117,137.81x = 4,988,545,678.18
  5. Step 5: Solve for x
    x = 4,988,545,678.18/117,137.81
  6. Step 6: Final answer
    x = 42,586.98

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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.