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Finding the Fourth Proportional to 164,439.40, 246,659.10 and 130,978.30

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Solution

The fourth proportional to 164,439.40, 246,659.10 and 130,978.30 is: 196,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,439.40 : 246,659.10 = 130,978.30 : x
  2. Step 2: Convert to fraction form
    164,439.40/246,659.10 = 130,978.30/x
  3. Step 3: Cross multiply
    164,439.40x = 246,659.10 × 130,978.30
  4. Step 4: Simplify right side
    164,439.40x = 32,306,989,597.53
  5. Step 5: Solve for x
    x = 32,306,989,597.53/164,439.40
  6. Step 6: Final answer
    x = 196,467.45

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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.