Home / 140,906.60-211,547.55-81,784.70

Finding the Fourth Proportional to 140,906.60, 211,547.55 and 81,784.70

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Solution

The fourth proportional to 140,906.60, 211,547.55 and 81,784.70 is: 122,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,906.60 : 211,547.55 = 81,784.70 : x
  2. Step 2: Convert to fraction form
    140,906.60/211,547.55 = 81,784.70/x
  3. Step 3: Cross multiply
    140,906.60x = 211,547.55 × 81,784.70
  4. Step 4: Simplify right side
    140,906.60x = 17,301,352,912.49
  5. Step 5: Solve for x
    x = 17,301,352,912.49/140,906.60
  6. Step 6: Final answer
    x = 122,785.97

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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.