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Finding the Fourth Proportional to 162,554.20, 243,539.70 and 139,226.20

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Solution

The fourth proportional to 162,554.20, 243,539.70 and 139,226.20 is: 208,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,554.20 : 243,539.70 = 139,226.20 : x
  2. Step 2: Convert to fraction form
    162,554.20/243,539.70 = 139,226.20/x
  3. Step 3: Cross multiply
    162,554.20x = 243,539.70 × 139,226.20
  4. Step 4: Simplify right side
    162,554.20x = 33,907,106,980.14
  5. Step 5: Solve for x
    x = 33,907,106,980.14/162,554.20
  6. Step 6: Final answer
    x = 208,589.55

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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.