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Finding the Fourth Proportional to 118,706.90, 178,087 and 39,819.10

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Solution

The fourth proportional to 118,706.90, 178,087 and 39,819.10 is: 59,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,706.90 : 178,087 = 39,819.10 : x
  2. Step 2: Convert to fraction form
    118,706.90/178,087 = 39,819.10/x
  3. Step 3: Cross multiply
    118,706.90x = 178,087 × 39,819.10
  4. Step 4: Simplify right side
    118,706.90x = 7,091,264,061.70
  5. Step 5: Solve for x
    x = 7,091,264,061.70/118,706.90
  6. Step 6: Final answer
    x = 59,737.59

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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.