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Finding the Fourth Proportional to 118,990.72, 178,532.81 and 52,384.12

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Solution

The fourth proportional to 118,990.72, 178,532.81 and 52,384.12 is: 78,596.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,990.72 : 178,532.81 = 52,384.12 : x
  2. Step 2: Convert to fraction form
    118,990.72/178,532.81 = 52,384.12/x
  3. Step 3: Cross multiply
    118,990.72x = 178,532.81 × 52,384.12
  4. Step 4: Simplify right side
    118,990.72x = 9,352,282,988.39
  5. Step 5: Solve for x
    x = 9,352,282,988.39/118,990.72
  6. Step 6: Final answer
    x = 78,596.74

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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.