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Finding the Fourth Proportional to 147,487.30, 221,346.15 and 68,611.30

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Solution

The fourth proportional to 147,487.30, 221,346.15 and 68,611.30 is: 102,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,487.30 : 221,346.15 = 68,611.30 : x
  2. Step 2: Convert to fraction form
    147,487.30/221,346.15 = 68,611.30/x
  3. Step 3: Cross multiply
    147,487.30x = 221,346.15 × 68,611.30
  4. Step 4: Simplify right side
    147,487.30x = 15,186,847,101.50
  5. Step 5: Solve for x
    x = 15,186,847,101.50/147,487.30
  6. Step 6: Final answer
    x = 102,970.54

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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.