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Finding the Fourth Proportional to 179,543.70, 268,991.55 and 85,842.90

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Solution

The fourth proportional to 179,543.70, 268,991.55 and 85,842.90 is: 128,609.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,543.70 : 268,991.55 = 85,842.90 : x
  2. Step 2: Convert to fraction form
    179,543.70/268,991.55 = 85,842.90/x
  3. Step 3: Cross multiply
    179,543.70x = 268,991.55 × 85,842.90
  4. Step 4: Simplify right side
    179,543.70x = 23,091,014,727.50
  5. Step 5: Solve for x
    x = 23,091,014,727.50/179,543.70
  6. Step 6: Final answer
    x = 128,609.44

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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.