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Finding the Fourth Proportional to 118,765.67, 178,164.90 and 39,902.45

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Solution

The fourth proportional to 118,765.67, 178,164.90 and 39,902.45 is: 59,859.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,765.67 : 178,164.90 = 39,902.45 : x
  2. Step 2: Convert to fraction form
    118,765.67/178,164.90 = 39,902.45/x
  3. Step 3: Cross multiply
    118,765.67x = 178,164.90 × 39,902.45
  4. Step 4: Simplify right side
    118,765.67x = 7,109,216,014.01
  5. Step 5: Solve for x
    x = 7,109,216,014.01/118,765.67
  6. Step 6: Final answer
    x = 59,859.18

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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.