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Finding the Fourth Proportional to 118,554.89, 177,634.89 and 83,420.73

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Solution

The fourth proportional to 118,554.89, 177,634.89 and 83,420.73 is: 124,992.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,554.89 : 177,634.89 = 83,420.73 : x
  2. Step 2: Convert to fraction form
    118,554.89/177,634.89 = 83,420.73/x
  3. Step 3: Cross multiply
    118,554.89x = 177,634.89 × 83,420.73
  4. Step 4: Simplify right side
    118,554.89x = 14,818,432,197.27
  5. Step 5: Solve for x
    x = 14,818,432,197.27/118,554.89
  6. Step 6: Final answer
    x = 124,992.17

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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.