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Finding the Fourth Proportional to 118,763.61, 178,161.81 and 39,900.39

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Solution

The fourth proportional to 118,763.61, 178,161.81 and 39,900.39 is: 59,856.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.61 : 178,161.81 = 39,900.39 : x
  2. Step 2: Convert to fraction form
    118,763.61/178,161.81 = 39,900.39/x
  3. Step 3: Cross multiply
    118,763.61x = 178,161.81 × 39,900.39
  4. Step 4: Simplify right side
    118,763.61x = 7,108,724,811.30
  5. Step 5: Solve for x
    x = 7,108,724,811.30/118,763.61
  6. Step 6: Final answer
    x = 59,856.09

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1.5x scale

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.