Home / 165,211.80-247,644.90-90,216.60

Finding the Fourth Proportional to 165,211.80, 247,644.90 and 90,216.60

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Solution

The fourth proportional to 165,211.80, 247,644.90 and 90,216.60 is: 135,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,211.80 : 247,644.90 = 90,216.60 : x
  2. Step 2: Convert to fraction form
    165,211.80/247,644.90 = 90,216.60/x
  3. Step 3: Cross multiply
    165,211.80x = 247,644.90 × 90,216.60
  4. Step 4: Simplify right side
    165,211.80x = 22,341,680,885.34
  5. Step 5: Solve for x
    x = 22,341,680,885.34/165,211.80
  6. Step 6: Final answer
    x = 135,230.54

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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.