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Finding the Fourth Proportional to 147,610.80, 221,448.60 and 72,766.80

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Solution

The fourth proportional to 147,610.80, 221,448.60 and 72,766.80 is: 109,166.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,610.80 : 221,448.60 = 72,766.80 : x
  2. Step 2: Convert to fraction form
    147,610.80/221,448.60 = 72,766.80/x
  3. Step 3: Cross multiply
    147,610.80x = 221,448.60 × 72,766.80
  4. Step 4: Simplify right side
    147,610.80x = 16,114,105,986.48
  5. Step 5: Solve for x
    x = 16,114,105,986.48/147,610.80
  6. Step 6: Final answer
    x = 109,166.17

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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.