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Finding the Fourth Proportional to 156,005.80, 234,008.70 and 137,926.60

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Solution

The fourth proportional to 156,005.80, 234,008.70 and 137,926.60 is: 206,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,005.80 : 234,008.70 = 137,926.60 : x
  2. Step 2: Convert to fraction form
    156,005.80/234,008.70 = 137,926.60/x
  3. Step 3: Cross multiply
    156,005.80x = 234,008.70 × 137,926.60
  4. Step 4: Simplify right side
    156,005.80x = 32,276,024,361.42
  5. Step 5: Solve for x
    x = 32,276,024,361.42/156,005.80
  6. Step 6: Final answer
    x = 206,889.90

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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.