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Finding the Fourth Proportional to 123,688.54, 170,675.77 and 69,243.68

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Solution

The fourth proportional to 123,688.54, 170,675.77 and 69,243.68 is: 95,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,688.54 : 170,675.77 = 69,243.68 : x
  2. Step 2: Convert to fraction form
    123,688.54/170,675.77 = 69,243.68/x
  3. Step 3: Cross multiply
    123,688.54x = 170,675.77 × 69,243.68
  4. Step 4: Simplify right side
    123,688.54x = 11,818,218,401.63
  5. Step 5: Solve for x
    x = 11,818,218,401.63/123,688.54
  6. Step 6: Final answer
    x = 95,548.21

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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.