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Finding the Fourth Proportional to 115,657.40, 173,486.10 and 36,779.60

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Solution

The fourth proportional to 115,657.40, 173,486.10 and 36,779.60 is: 55,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,657.40 : 173,486.10 = 36,779.60 : x
  2. Step 2: Convert to fraction form
    115,657.40/173,486.10 = 36,779.60/x
  3. Step 3: Cross multiply
    115,657.40x = 173,486.10 × 36,779.60
  4. Step 4: Simplify right side
    115,657.40x = 6,380,749,363.56
  5. Step 5: Solve for x
    x = 6,380,749,363.56/115,657.40
  6. Step 6: Final answer
    x = 55,169.40

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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.