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Finding the Fourth Proportional to 131,576.57, 181,575.54 and 71,147.07

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Solution

The fourth proportional to 131,576.57, 181,575.54 and 71,147.07 is: 98,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,576.57 : 181,575.54 = 71,147.07 : x
  2. Step 2: Convert to fraction form
    131,576.57/181,575.54 = 71,147.07/x
  3. Step 3: Cross multiply
    131,576.57x = 181,575.54 × 71,147.07
  4. Step 4: Simplify right side
    131,576.57x = 12,918,567,654.67
  5. Step 5: Solve for x
    x = 12,918,567,654.67/131,576.57
  6. Step 6: Final answer
    x = 98,182.89

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1.5x scale

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.