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Finding the Fourth Proportional to 123,886.68, 170,958.78 and 70,174.68

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Solution

The fourth proportional to 123,886.68, 170,958.78 and 70,174.68 is: 96,838.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,886.68 : 170,958.78 = 70,174.68 : x
  2. Step 2: Convert to fraction form
    123,886.68/170,958.78 = 70,174.68/x
  3. Step 3: Cross multiply
    123,886.68x = 170,958.78 × 70,174.68
  4. Step 4: Simplify right side
    123,886.68x = 11,996,977,679.69
  5. Step 5: Solve for x
    x = 11,996,977,679.69/123,886.68
  6. Step 6: Final answer
    x = 96,838.32

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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.