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Finding the Fourth Proportional to 118,520.80, 177,723.60 and 65,874.40

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Solution

The fourth proportional to 118,520.80, 177,723.60 and 65,874.40 is: 98,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,520.80 : 177,723.60 = 65,874.40 : x
  2. Step 2: Convert to fraction form
    118,520.80/177,723.60 = 65,874.40/x
  3. Step 3: Cross multiply
    118,520.80x = 177,723.60 × 65,874.40
  4. Step 4: Simplify right side
    118,520.80x = 11,707,435,515.84
  5. Step 5: Solve for x
    x = 11,707,435,515.84/118,520.80
  6. Step 6: Final answer
    x = 98,779.59

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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.