Home / 261,020.60-391,567.35-111,259.70

Finding the Fourth Proportional to 261,020.60, 391,567.35 and 111,259.70

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Solution

The fourth proportional to 261,020.60, 391,567.35 and 111,259.70 is: 166,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,020.60 : 391,567.35 = 111,259.70 : x
  2. Step 2: Convert to fraction form
    261,020.60/391,567.35 = 111,259.70/x
  3. Step 3: Cross multiply
    261,020.60x = 391,567.35 × 111,259.70
  4. Step 4: Simplify right side
    261,020.60x = 43,565,665,890.80
  5. Step 5: Solve for x
    x = 43,565,665,890.80/261,020.60
  6. Step 6: Final answer
    x = 166,905.09

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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.