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Finding the Fourth Proportional to 147,666.60, 221,564.70 and 68,740.20

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Solution

The fourth proportional to 147,666.60, 221,564.70 and 68,740.20 is: 103,140.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,666.60 : 221,564.70 = 68,740.20 : x
  2. Step 2: Convert to fraction form
    147,666.60/221,564.70 = 68,740.20/x
  3. Step 3: Cross multiply
    147,666.60x = 221,564.70 × 68,740.20
  4. Step 4: Simplify right side
    147,666.60x = 15,230,401,790.94
  5. Step 5: Solve for x
    x = 15,230,401,790.94/147,666.60
  6. Step 6: Final answer
    x = 103,140.47

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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.