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Finding the Fourth Proportional to 118,808.19, 178,212.33 and 39,922.47

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Solution

The fourth proportional to 118,808.19, 178,212.33 and 39,922.47 is: 59,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,808.19 : 178,212.33 = 39,922.47 : x
  2. Step 2: Convert to fraction form
    118,808.19/178,212.33 = 39,922.47/x
  3. Step 3: Cross multiply
    118,808.19x = 178,212.33 × 39,922.47
  4. Step 4: Simplify right side
    118,808.19x = 7,114,676,398.06
  5. Step 5: Solve for x
    x = 7,114,676,398.06/118,808.19
  6. Step 6: Final answer
    x = 59,883.72

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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.