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Finding the Fourth Proportional to 147,686.60, 221,529.90 and 68,808.80

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Solution

The fourth proportional to 147,686.60, 221,529.90 and 68,808.80 is: 103,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,686.60 : 221,529.90 = 68,808.80 : x
  2. Step 2: Convert to fraction form
    147,686.60/221,529.90 = 68,808.80/x
  3. Step 3: Cross multiply
    147,686.60x = 221,529.90 × 68,808.80
  4. Step 4: Simplify right side
    147,686.60x = 15,243,206,583.12
  5. Step 5: Solve for x
    x = 15,243,206,583.12/147,686.60
  6. Step 6: Final answer
    x = 103,213.20

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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.