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Finding the Fourth Proportional to 169,800.40, 254,700.60 and 81,226.90

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Solution

The fourth proportional to 169,800.40, 254,700.60 and 81,226.90 is: 121,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,800.40 : 254,700.60 = 81,226.90 : x
  2. Step 2: Convert to fraction form
    169,800.40/254,700.60 = 81,226.90/x
  3. Step 3: Cross multiply
    169,800.40x = 254,700.60 × 81,226.90
  4. Step 4: Simplify right side
    169,800.40x = 20,688,540,166.14
  5. Step 5: Solve for x
    x = 20,688,540,166.14/169,800.40
  6. Step 6: Final answer
    x = 121,840.35

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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.