Home / 153,582.60-211,961.16-85,605.78

Finding the Fourth Proportional to 153,582.60, 211,961.16 and 85,605.78

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Solution

The fourth proportional to 153,582.60, 211,961.16 and 85,605.78 is: 118,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,582.60 : 211,961.16 = 85,605.78 : x
  2. Step 2: Convert to fraction form
    153,582.60/211,961.16 = 85,605.78/x
  3. Step 3: Cross multiply
    153,582.60x = 211,961.16 × 85,605.78
  4. Step 4: Simplify right side
    153,582.60x = 18,145,100,431.50
  5. Step 5: Solve for x
    x = 18,145,100,431.50/153,582.60
  6. Step 6: Final answer
    x = 118,145.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.