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Finding the Fourth Proportional to 170,142.10, 234,826.05 and 129,793.30

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Solution

The fourth proportional to 170,142.10, 234,826.05 and 129,793.30 is: 179,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,142.10 : 234,826.05 = 129,793.30 : x
  2. Step 2: Convert to fraction form
    170,142.10/234,826.05 = 129,793.30/x
  3. Step 3: Cross multiply
    170,142.10x = 234,826.05 × 129,793.30
  4. Step 4: Simplify right side
    170,142.10x = 30,478,847,955.47
  5. Step 5: Solve for x
    x = 30,478,847,955.47/170,142.10
  6. Step 6: Final answer
    x = 179,137.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.