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Finding the Fourth Proportional to 172,854.20, 259,281.30 and 162,356.60

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Solution

The fourth proportional to 172,854.20, 259,281.30 and 162,356.60 is: 243,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,854.20 : 259,281.30 = 162,356.60 : x
  2. Step 2: Convert to fraction form
    172,854.20/259,281.30 = 162,356.60/x
  3. Step 3: Cross multiply
    172,854.20x = 259,281.30 × 162,356.60
  4. Step 4: Simplify right side
    172,854.20x = 42,096,030,311.58
  5. Step 5: Solve for x
    x = 42,096,030,311.58/172,854.20
  6. Step 6: Final answer
    x = 243,534.90

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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.