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Finding the Fourth Proportional to 147,534.80, 221,010.60 and 80,855.60

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Solution

The fourth proportional to 147,534.80, 221,010.60 and 80,855.60 is: 121,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,534.80 : 221,010.60 = 80,855.60 : x
  2. Step 2: Convert to fraction form
    147,534.80/221,010.60 = 80,855.60/x
  3. Step 3: Cross multiply
    147,534.80x = 221,010.60 × 80,855.60
  4. Step 4: Simplify right side
    147,534.80x = 17,869,944,669.36
  5. Step 5: Solve for x
    x = 17,869,944,669.36/147,534.80
  6. Step 6: Final answer
    x = 121,123.59

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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.