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Finding the Fourth Proportional to 123,749.76, 170,775.36 and 70,034.88

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Solution

The fourth proportional to 123,749.76, 170,775.36 and 70,034.88 is: 96,648.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,749.76 : 170,775.36 = 70,034.88 : x
  2. Step 2: Convert to fraction form
    123,749.76/170,775.36 = 70,034.88/x
  3. Step 3: Cross multiply
    123,749.76x = 170,775.36 × 70,034.88
  4. Step 4: Simplify right side
    123,749.76x = 11,960,231,844.56
  5. Step 5: Solve for x
    x = 11,960,231,844.56/123,749.76
  6. Step 6: Final answer
    x = 96,648.53

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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.