Home / 140,917.60-211,376.40-85,621.60

Finding the Fourth Proportional to 140,917.60, 211,376.40 and 85,621.60

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Solution

The fourth proportional to 140,917.60, 211,376.40 and 85,621.60 is: 128,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,917.60 : 211,376.40 = 85,621.60 : x
  2. Step 2: Convert to fraction form
    140,917.60/211,376.40 = 85,621.60/x
  3. Step 3: Cross multiply
    140,917.60x = 211,376.40 × 85,621.60
  4. Step 4: Simplify right side
    140,917.60x = 18,098,385,570.24
  5. Step 5: Solve for x
    x = 18,098,385,570.24/140,917.60
  6. Step 6: Final answer
    x = 128,432.40

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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.